MySql JDBC SQLException
I am trying to connect to a MySQL database (with driver 2.0.14) using variables containing the user and password values. Unfortunately I get an SQLException "No suitable driver". It works fine when I hard code the values for the user and password in the URL. Is it possible to pass the parameters as variables?
This statement works fine:
Class.forName("org.gjt.mm.mysql.Driver").newInstance();
Connection Conn = DriverManager.getConnection("jdbc:mysql://alsdev/test?user=709&password=11111111";);
But I get an SQLException when I try this:
String url = "jdbc:mysql://alsdev/test?user=";;
String user = "709";
String password1 = "11111111";
String connect = "\"" + url + user + "&password=" + password1 + "\"";
Class.forName("org.gjt.mm.mysql.Driver").newInstance();
Connection Conn = DriverManager.getConnection(connect);
Any help would be greatly appreciated.
Thanx
Simon Fisher
Perth, Western Australia
String connect = "\"" + url + user + "&password=" + password1 + "\""; Use this,
String connect = url + user + "&password=" + password1;
Similar Messages
-
MYSQL JDBC NoClassDefFoundError: org/aspectj/lang/Signature
i am trying to connect to a database via java using JDBC i have installed:
jdk1.5.0_01
mysql-connector-java-3.1.8-bin-g.jar
MySQL Server 4.1
Java works fine, MYSQL works fine from the command prompt but when it comes to testing using this simple java program
public class JdbcExample1 {
public static void main(String args[]) {
Connection con = null;
try {
Class.forName("com.mysql.jdbc.Driver").newInstance();
con = DriverManager.getConnection("localhost", "username", "password");
if(!con.isClosed())
System.out.println("Successfully connected to MySQL server...");
} catch(Exception e) {
System.err.println("Exception: " + e.getMessage());
} finally {
try {
if(con != null)
con.close();
} catch(SQLException e) {}
this compiles fine but when run i get the following error message
Exception in thread "main" java.lang.NoClassDefFoundError: org/aspectj/lang/Signature
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:164)
at JdbcExample1.main(JdbcExample1.java:10)
class path is set as .;C:\Program Files\Java\jdk1.5.0_01\jre\lib\ext\mysql-connector-java-3.1.8-bin.java
any help or input on this error would be appreciated
thanks in advanced NeilHi, All:
I just read this thread of discussion and got valueable info to solve my problem in a similar fashion. I'd suggest the last poster, Anil, to re-read the whole thread to correct the possible problems stated.
I would just like to add my problem/solution scenario to this thread to share my experience. I assume that readers already went through the previous notes in this thread.
#1. Space in Path:
I installed
MySQL DB server in: "C:\Program Files\MySQL\MySQL Server 4.1"
MySQL JDBC Driver: D:\mysql\mysql-connector-java-3.1.8
It seems to me that the DB server installed directory is not affected by whether there is a space in path name. The JDBC Driver path, on the other hand, does have the side effect of the space in path name when accessing by the Java client.
#2. -g in JDBC Driver:
I have been using the driver mysql-connector-java-3.1.8-bin.jar. However, right before I needed to create my ant build.xml configuration file (more details later), I thought the instruction asked me to use the mysql-connector-java-3.1.8-bin-g.jar (the debug version as kpreiser indicated), and therefore I got the now-well-known "org/aspectj/lang/Signature" error. After I removed that "-g" from the JDBC driver extression in my build.xml file, it then works well. (Great tip, kpreiser.)
#3. Middlegen with Hibernate:
My situation is a bit more complicated, but the issue of "org/aspectj/lang/Signature" error was the same (finally resolved in #2). I was trying to use Middlegen to re-generate my Hibernate map files from the data schema. (Hibernate is an open source tool that lets you create JavaBean source file from a Hibernate map file to map to a database table (see http://www.hibernate.org/ for more details.) Since I re-factored my data schema in the database, I needed to re-generate the Hibernate map files (from data schema) so that I can in turn use the map files to re-generate the JavaBean code. I wanted to use the Middlegen tool (see http://www.hibernate.org/98.html for more details) to re-generate the map files from database schema. However, in order to use Middlegen properly, you need to create the ant build.xml file to do that job. So I had to resort to MiddlegenIDE (see http://ultimania.org/middlegenide/ for more details) to help generate that build.xml file. (This is where I had the -g specified for the JDBC driver in the build.xml file that caused the problem.) Once that build.xml file is generated, the use of ant (a Java make tool) with the build.xml file can generate the hibernate map files. From these map files, JavaBean source files can be generated using Hibernate CodeGenerator.hbm2java tool. (There are several other useful tools in Hibernate too to convert the database ddl schema and the JavaBean source file.)
Obviously, there are other approaches and tools that you can use (XDoclet for instance) for different situations, but I am only providing a high level overview on what you can do to be more productive if you are involved in a large and complicated project with Java/JDBC and ORM (Object/Relational Mapping).
Item #3 may sound complicated at first, but it's worth the time to learn the tools and concept. Once you are familiar with these tools (Eclipse, Hibernate, Middlegen, Ant, etc.), you will become more productive in responding to the dynamic nature of the high-tech world where changing requirements are the only constant. I hope that these separate tools will become more integrated and easier to use in the future, but for now they do the job well.
Thanks for the great tips and hope that this helps too.
- Shuh -
I have program java likes this :
import java.sql.*;
public class LoadDriver {
// Define the JDBC Driver and the database connection URL
public static final String DRIVER = "com.mysql.jdbc.Driver";
public static final String URL = "jdbc:mysql://localhost/java?user=test&password=test";
public static void main(String args[]) {
Connection conn = null;
Statement select = null;
ResultSet result = null;
try {
// load the driver dynamically
Class.forName(DRIVER);
// connect to the database
conn = DriverManager.getConnection(URL);
// perform a query. first create a Statement object from the connection
select = conn.createStatement();
// next execute a query (SQL string) and return the results in a ResultSet object
result = select.executeQuery("select fname, lname from names order by lname, fname");
// print out the results
while(result.next()) {
String fname = result.getString("fname"); // note these match the columns in the
String lname = result.getString("lname"); // SELECT statement (fname, lname)
System.out.println(fname+" "+lname);
// check if there was a problem executing the SQL statement
catch (SQLException e) {
System.err.println("SQL Exception: "+e.getMessage());
System.exit(1);
// if the JDBC driver is not in the CLASSPATH
catch (ClassNotFoundException e) {
System.err.println("Class not found: "+e.getMessage());
System.exit(1);
// catch any other exceptions
catch (Exception e) {
System.err.println("Other Exception: ");
System.err.println(e.getMessage());
System.exit(1);
// You want to close the connections no matter what happens!
finally {
try {
// close the result, query, and database connection
if (result != null) result.close();
if (select != null) select.close();
if (conn != null) conn.close();
catch (SQLException e) {
// one of the new cases where it's OK to just eat exceptions or at the most log them
System.err.println("Error closing connection: "+e.getMessage());
but i get errror likes this :
D:\Program Files\Java\jdk1.5.0_03\bin>javac LoadDriver.java
D:\Program Files\Java\jdk1.5.0_03\bin>java LoadDriver
Exception in thread "main" java.lang.NoClassDefFoundError: org/aspectj/lang/Sign
ature
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:164)
at LoadDriver.main(LoadDriver.java:20)
D:\Program Files\Java\jdk1.5.0_03\bin>
I place mysql.jar in
- D:\Program Files\Java\jdk1.5.0_03\jre\lib\ext
- D:\Program Files\Java\jdk1.5.0_03\lib
- D:\Program Files\Java\jdk1.5.0_03\jre\lib
and i make classpath to D:\Program Files\Java\jdk1.5.0_03\bin;D:\Program Files\Java\jdk1.5.0_03\jre\lib\ext\
but it still doesn't work
What must I do ?
Thx 4 your replyHello!
I'm getting this same error message and i followed the code example as close as i could:
Thanks for any help on this!
bk
set oldpath=%PATH%
set JAVA_HOME=C:\jdk1.5.0_02
set ANT_HOME=C:\ANT\apache-ant-1.6.5
set PATH=C:\jdk1.5.0_02\bin;%ANT_HOME%\bin
set CLASSPATH=.;C:\jdk1.5.0_02\lib;C:\MYSQL\mysql-connector-java-3.1.10\src\com\;C:\MYSQL\mysql-connector-java-3.1.10\src\org\;C:\MYSQL\mysql-connector-java-3.1.10\mysql-connector-java-3.1.10-bin-g.jar;
http://www.developer.com/java/data/article.php/3417381#Critical_steps_in_using_JDBC
import java.sql.*;
public class Jdbc11 {
public static void main(String args[]){
System.out.println(
"Copyright 2004, R.G.Baldwin");
try {
Statement stmt;
//Register the JDBC driver for MySQL.
Class.forName("com.mysql.jdbc.Driver");
//Define URL of database server for
// database named mysql on the localhost
// with the default port number 3306.
String url =
"jdbc:mysql://localhost:3306/mysql";
//Get a connection to the database for a
// user named root with a blank password.
// This user is the default administrator
// having full privileges to do anything.
Connection con =
DriverManager.getConnection(
url,"root", "");
//Display URL and connection information
System.out.println("URL: " + url);
System.out.println("Connection: " + con);
//Get a Statement object
stmt = con.createStatement();
//Create the new database
stmt.executeUpdate(
"CREATE DATABASE JunkDB");
//Register a new user named auser on the
// database named JunkDB with a password
// drowssap enabling several different
// privileges.
stmt.executeUpdate(
"GRANT SELECT,INSERT,UPDATE,DELETE," +
"CREATE,DROP " +
"ON JunkDB.* TO 'auser'@'localhost' " +
"IDENTIFIED BY 'drowssap';");
con.close();
}catch( Exception e ) {
e.printStackTrace();
}//end catch
}//end main
}//end class Jdbc11
Exception in thread "main" java.lang.NoClassDefFoundError: org/aspectj/lang/Signature -
Error in Class.forName("com.mysql.jdbc.driver")
Hi forum,
Please help me to solve the issue.
im using the following jsp code for genrating the reports using JASPER REPORTS
the JSP FILE
<%@ page contentType="text/html;charset=windows-1252"%>
<%@ page import="java.io.*"%>
<%@ page import="java.util.*"%>
<%@ page import="java.sql.*"%>
<%@ page import="javax.sql.DataSource"%>
<%@ page import="javax.naming.InitialContext"%>
<%@ page import="net.sf.jasperreports.engine.*"%>
<%@ page import="net.sf.jasperreports.engine.design.JasperDesign"%>
<%@ page import="net.sf.jasperreports.engine.xml.JRXmlLoader"%>
<%@ page import="net.sf.jasperreports.engine.export.*" %>
<%@ page import ="net.sf.jasperreports.engine.*"%>
<%@ page import ="net.sf.jasperreports.engine.JasperFillManager"%>
<%@ page import ="net.sf.jasperreports.engine.JRException"%>
<%@ page import="net.sf.jasperreports.engine.JasperReport"%>
<%@ page import="net.sf.jasperreports.engine.JasperPrint"%>
<html>
<body bgcolor="00ffcc">
<%
try{
Connection con = null;
String url="jdbc:mysql://localhost/customer";
String username = "root";
String password = "cmsadmin";
InputStream input=new FileInputStream(new File("C:/Documents and Settings/user/My Documents/NetBeansProjects/jasperreports/web/helloworld.xml"));
JasperDesign design = JRXmlLoader.load(input);
JasperReport report = JasperCompileManager.compileReport(design);
Map params = new HashMap();
params.put("reportTitle", "helloworld");
params.put("author", "Muthu Kumar");
params.put("startDate", (new java.util.Date()).toString());
params.put("ReportTitle", "PDF JasperReport");
<img class="emoticon" src="images/emoticons/confused.gif" border="0" alt="" />Class.forName("com.mysql.jdbc.Driver");<img class="emoticon" src="images/emoticons/confused.gif" border="0" alt="" /><img src="images/emoticons/confused.gif" border="0" alt="" />
con = DriverManager.getConnection(url,username,password);
JasperPrint print = JasperFillManager.fillReport(report, params, con);
OutputStream output=new FileOutputStream(new File("C:/Documents and Settings/user/My Documents/NetBeansProjects/jasperreports/helloreportworld.pdf"));
JasperExportManager.exportReportToPdfStream(print, output);
// JasperViewer.viewReport(print);
catch(SQLException es) {
out.println(es);
catch(JRException ex){
//ex.printStackTrace();
out.println(ex);
%>
</body>
</html>The error it is saying is in the line Class.forName(....) ;
Please look for the emoctions with question mark
i DOn know what to do.
Please help
Im comparin the below JRXML file as with the above code
<?xml version="1.0"?>
<!DOCTYPE jasperReport
PUBLIC "-//JasperReports//DTD Report Design//EN"
"http://jasperreports.sourceforge.net/dtds/jasperreport.dtd">
<jasperReport name="helloworld">
<parameter name="reportTitle" class="java.lang.String"/>
<parameter name="author" class="java.lang.String"/>
<parameter name="startDate" class="java.lang.String"/>
<queryString>
<![CDATA[SELECT * FROM customer order by UserID ]]>
</queryString>
<field name="UserID" class="java.lang.String"/>
<field name="UserName" class="java.lang.String"/>
<field name="City" class="java.lang.String"/>
<field name="State" class="java.lang.String"/>
<title>
<band height="60">
<textField>
<reportElement x="0" y="10" width="500" height="40"/>
<textElement textAlignment="Center">
<font size="24"/>
</textElement>
<textFieldExpression class="java.lang.String">
<![CDATA[$P{reportTitle}]]>
</textFieldExpression>
</textField>
<textField>
<reportElement x="0" y="40" width="500" height="20"/>
<textElement textAlignment="Center"/>
<textFieldExpression class="java.lang.String">
<![CDATA["Run by: " + $P{author}
+ " on " + $P{startDate}]]>
</textFieldExpression>
</textField>
</band>
</title>
<columnHeader>
<band height="30">
<rectangle>
<reportElement x="0" y="0" width="500" height="25"/>
<graphicElement/>
</rectangle>
<staticText>
<reportElement x="5" y="5" width="50" height="15"/>
<textElement/>
<text><![CDATA[UserID]]></text>
</staticText>
<staticText>
<reportElement x="55" y="5" width="150" height="15"/>
<text><![CDATA[UserName]]></text>
</staticText>
<staticText>
<reportElement x="205" y="5" width="255" height="15"/>
<text><![CDATA[City, State]]></text>
</staticText>
</band>
</columnHeader>
<detail>
<band height="20">
<textField>
<reportElement x="5" y="0" width="50" height="15"/>
<textElement/>
<textFieldExpression class="java.lang.String">
<![CDATA[$F{UserID}]]>
</textFieldExpression>
</textField>
<textField>
<reportElement x="55" y="0" width="150" height="15"/>
<textElement/>
<textFieldExpression class="java.lang.String">
<![CDATA[$F{UserName}]]>
</textFieldExpression>
</textField>
<textField>
<reportElement x="205" y="0" width="255" height="15"/>
<textElement/>
<textFieldExpression class="java.lang.String">
<![CDATA[$F{City} + ", " + $F{State}]]>
</textFieldExpression>
</textField>
</band>
</detail>
</jasperReport>Glass_Fish wrote:
I have set the classpath in the environment variables in the my computer properties.The web container has it's own properties. The "system" classpath means absolutely nothing to it. Read your server's documentation. -
Com.mysql.jdbc.JDBC4Connection suspected memory leak in java
We have a java application where we are using Bonecp pooling library. Below is how we setup the pooling.
[code]
try {
// setup the connection pool
BoneCPConfig config = new BoneCPConfig();
config.setJdbcUrl("jdbc:mysql://**.**.**.**:3306/test1"); config.setUsername("******");
config.setPassword("*******"); config.setMinConnectionsPerPartition(5);
config.setMaxConnectionsPerPartition(40);
config.setPartitionCount(1);
connectionPool = new BoneCP(config); // setup the connection pool
catch (SQLException e) {
e.printStackTrace(System.out);
[/code]
Then for insert and update queries we do this and below we make sure closed the statement.
[code]
Statement stmt1 = null;
stmt1 = dbconn.createStatement();
String insertQuery3 =........
count = stmt9.executeUpdate(insertQuery3);
try{
if ( stmt1!= null ){ stmt1.close();
else{
System.out.println("No stm1 exist");
}catch(SQLException ex){ System.out.println("SQLException has been caught for stmt1");
ex.printStackTrace(System.out);
For select we do this
Statement stmt2 = null;
stmt2 = dbconn.createStatement();
String selectQuery2= .........
ResultSet rs2 = stmt2.executeQuery(selectQuery2);
if(rs2.next())
try{
if ( rs2!= null ){ rs2.close();
} else{
System.out.println("No rs2 exist");
if ( stmt2!= null ){ stmt2.close();
} else{
System.out.println("No stm2 exist");
}catch(SQLException ex){ System.out.println("SQLException has been caught for stmt2");
ex.printStackTrace(System.out);
[/code]
Thus we have ensured that every resultset and statement is closed immediately after its use. The problem now when we took few sample from MAT is show increasing memory usage as below.
Sample 1
[code]
21 instances of "com.mysql.jdbc.JDBC4Connection", loaded by "sun.misc.Launcher$ExtClassLoader @ 0xf000a4f0" occupy 11,793,200 (76.19%) bytes.
Biggest instances:
com.mysql.jdbc.JDBC4Connection @ 0xf016d728 - 958,096 (6.19%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf0094478 - 875,568 (5.66%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf0201ba0 - 816,048 (5.27%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf04ab3f0 - 754,016 (4.87%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf006ee40 - 727,024 (4.70%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf0076a90 - 663,872 (4.29%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf04ad490 - 618,200 (3.99%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf00b7bd0 - 616,608 (3.98%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf0467bc0 - 612,544 (3.96%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf015fcf0 - 598,400 (3.87%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf021c830 - 584,992 (3.78%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf0097818 - 561,224 (3.63%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf01a27c0 - 531,816 (3.44%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf00bea28 - 531,416 (3.43%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf01c2d80 - 522,184 (3.37%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf04693e0 - 482,992 (3.12%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf012b158 - 453,256 (2.93%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf147f438 - 424,656 (2.74%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf15ff7d0 - 187,008 (1.21%) bytes.
Keywords
com.mysql.jdbc.JDBC4Connection
sun.misc.Launcher$ExtClassLoader @ 0xf000a4f0
file:///C:/Documents%20and%20Settings/ss/Local%20Settings/Temp/report2060944296830228239/pages/18.html# Reference Pattern
Class Name
Shallow Heap
Retained Heap
Percentage
class java.lang.Thread @ 0xf0003840
40
208
0.00%
[/code]
Sample 2
[code]
21 instances of "com.mysql.jdbc.JDBC4Connection", loaded by "sun.misc.Launcher$ExtClassLoader @ 0xf000a4f0" occupy 13,827,392 (78.27%) bytes.
Biggest instances:
com.mysql.jdbc.JDBC4Connection @ 0xf016d728 - 1,093,888 (6.19%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf0094478 - 957,888 (5.42%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf0201ba0 - 916,672 (5.19%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf04ab3f0 - 878,392 (4.97%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf006ee40 - 841,136 (4.76%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf015fcf0 - 758,336 (4.29%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf04ad490 - 747,240 (4.23%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf0076a90 - 735,712 (4.16%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf00b7bd0 - 700,912 (3.97%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf0467bc0 - 681,336 (3.86%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf00bea28 - 668,080 (3.78%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf021c830 - 658,816 (3.73%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf0097818 - 638,208 (3.61%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf01a27c0 - 605,376 (3.43%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf01c2d80 - 582,104 (3.29%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf04693e0 - 558,344 (3.16%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf147f438 - 523,952 (2.97%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf012b158 - 508,232 (2.88%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf1603618 - 276,944 (1.57%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf15ff7d0 - 275,288 (1.56%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf148fd70 - 220,536 (1.25%) bytes.
Keywords
com.mysql.jdbc.JDBC4Connection
sun.misc.Launcher$ExtClassLoader @ 0xf000a4f0
file:///C:/Documents%20and%20Settings/ss/Local%20Settings/Temp/report8548522855535006676/pages/18.html# Reference Pattern
Class Name
Shallow Heap
Retained Heap
Percentage
class java.lang.Thread @ 0xf0003840
40
208
0.00%
[/code]
Sample 3
[code]
21 instances of "com.mysql.jdbc.JDBC4Connection", loaded by "sun.misc.Launcher$ExtClassLoader @ 0xf000a4f0" occupy 17,339,632 (80.79%) bytes.
Biggest instances:
com.mysql.jdbc.JDBC4Connection @ 0xf016d728 - 1,228,048 (5.72%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf0094478 - 1,144,056 (5.33%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf0201ba0 - 1,126,120 (5.25%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf04ab3f0 - 1,074,552 (5.01%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf006ee40 - 993,912 (4.63%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf0076a90 - 931,512 (4.34%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf015fcf0 - 930,952 (4.34%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf04ad490 - 918,176 (4.28%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf00bea28 - 874,512 (4.07%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf0467bc0 - 846,368 (3.94%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf00b7bd0 - 838,448 (3.91%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf021c830 - 799,184 (3.72%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf0097818 - 791,256 (3.69%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf01a27c0 - 763,264 (3.56%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf01c2d80 - 745,088 (3.47%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf012b158 - 710,704 (3.31%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf04693e0 - 704,072 (3.28%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf147f438 - 680,400 (3.17%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf1603618 - 458,472 (2.14%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf148fd70 - 390,984 (1.82%) bytes.
com.mysql.jdbc.JDBC4Connection @ 0xf15ff7d0 - 389,552 (1.82%) bytes.
Keywords
com.mysql.jdbc.JDBC4Connection
sun.misc.Launcher$ExtClassLoader @ 0xf000a4f0
file:///C:/Documents%20and%20Settings/ss/Local%20Settings/Temp/report3656754586920669017/pages/18.html# Reference Pattern
Class Name
Shallow Heap
Retained Heap
Percentage
class java.lang.Thread @ 0xf0003840
40
208
0.00%
[/code]Dear Masijade,
Actually I was confuse with where to put and not to put the try and catch. Below is how my skeleton of my codes will be looking like. I just put one sample query there. If you notice at the very end finally I already have even now dbconn.close(); which closes the pooling connection. The problem I am worried now is that incase there is any exception how will it be rollbacked. Because if you notice now I lump all the queries under one big try and catch but with your suggestion I have to do try and catch for each query right?
[code]
BoneCP connectionPool = null;
class ConnectionHandler implements Runnable {
private Socket receivedSocketConn1;
ConnectionHandler(Socket receivedSocketConn1) {
this.receivedSocketConn1=receivedSocketConn1;
Connection dbconn = null;
public void run() { // etc
BufferedWriter writeBuffer = null;
BufferedReader readBuffer = null;
String capturedMessage="";
try{
dbconn = connectionPool.getConnection();
dbconn.setAutoCommit(false);
while ((nextChar=readBuffer.read()) != -1){
capturedMessage += (char) nextChar;
if (nextChar == '*')
try{
//all queries here.
try{
Statement stmt1 = null;
stmt1 = dbconn.createStatement();
try{
String updateCommand1 = //query
count = stmt1.executeUpdate(updateCommand1);
finally{
if( stmt1 != null ){
stmt1.close();
else{
System.out.println("stmt1 is null in finally close");
catch(SQLException ex){
ex.printStackTrace(System.out);
dbconn.commit
catch (SQLException ex){
ex.printStackTrace(System.out);
try{
dbconn.rollback();
catch (Exception rollback){
rollback.printStackTrace(System.out);
catch (Exception e){
e.printStackTrace(System.out);
try{
dbconn.rollback();
catch (Exception rollback){
rollback.printStackTrace(System.out);
finally
catch (SocketTimeoutException ex){
ex.printStackTrace();
catch (IOException ex){
ex.printStackTrace();
catch (Exception ex){
ex.printStackTrace(System.out);
finally{
try{
if ( dbconn != null ){
dbconn.close();
else{
System.out.println("dbConn is null in finally close");
catch(SQLException ex){
ex.printStackTrace();
try{
if ( writeBuffer != null ){
writeBuffer.close();
else{
System.out.println("w is null in finally close");
catch(IOException ex){
ex.printStackTrace(System.out);
[/code] -
Mm.mysql JDBC Driver and the WHERE clause
Anybody has succesfully performed a MySQL/JDBC query in a JSP application using more than one variable in the WHERE clause?
It works fine when I run queries with one fixed value assigned to a column and one variable assigned to the other column in the WHERE clause; but when I do it with more than one variable in the WHERE clause, it screws up throwing an error.
I wonder if it is a code error, a syntax error or if it is something tricky about the mm.mysql JDBC Driver. Following is a section of the code and the error. The variables are s_description and s_status. I read some examples in a book but they use SQL Server. Thank you in advance for any information.
CODE:
<% String sqlStatement = "" ; %>
<% String s_description = "Mexican Style Rice" ; %>
<% String s_status = "available" ; %>
<% java.sql.Statement stmt = con.createStatement(java.sql.ResultSet.TYPE_SCROLL_INSENSITIVE, java.sql.ResultSet.CONCUR_UPDATABLE); %>
<% java.sql.ResultSet rs ; %>
<% sqlStatement = "SELECT code, description, status FROM products WHERE products.description =" + s_description + " AND products.status =" + s_status + ";" ;%>
<% rs = stmt.executeQuery(sqlStatement); %>
<% rs.beforeFirst(); %>
<% while (rs.next()) { %>
<% rs.updateString(3, "sold"); %>
<% rs.updateRow(); %>
<% }%>
<% rs.close(); %>
This is the ERROR it throws
java.sql.SQLException: Column not found: Unknown column 'available' in 'where clause'
at org.gjt.mm.mysql.MysqlIO.sendCommand(MysqlIO.java:497)
at org.gjt.mm.mysql.MysqlIO.sqlQueryDirect(MysqlIO.java:550)
at org.gjt.mm.mysql.MysqlIO.sqlQuery(MysqlIO.java:635)
at org.gjt.mm.mysql.Connection.execSQL(Connection.java:882)
at org.gjt.mm.mysql.Connection.execSQL(Connection.java:815)
at org.gjt.mm.mysql.Statement.executeQuery(Statement.java:169)
at org.gjt.mm.mysql.jdbc2.Statement.executeQuery(Statement.java:78)
at pagecompile._GetFood_xjsp._jspService(_GetFood_xjsp.java:45)
at com.newatlanta.servletexec.JSP10HttpJspPage.service(JSP10HttpJspPage.java:41)
at com.newatlanta.servletexec.JSP10Servlet.service(JSP10Servlet.java:779)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.newatlanta.servletexec.ServletExec.CallServletService(ServletExec.java:1679)
at com.newatlanta.servletexec.ServletExec.processServletRequest(ServletExec.java:1654)
at com.newatlanta.servletexec.ServletExec.processServletAlias(ServletExec.java:1602)
at com.newatlanta.servletexec.ServletExec.ProcessRequest(ServletExec.java:1343)
at com.newatlanta.servletexec.ServletExec.ProcessRequest(ServletExec.java:1113)I think perhaps this sentence has problems:
<% sqlStatement = "SELECT code, description, status FROM products WHERE products.description =" + s_description + " AND products.status =" + s_status + ";" ;%>
You can
<% sqlStatement = "SELECT code, description, status FROM products WHERE products.description ='" + s_description + "' AND products.status = '" + s_status + "'" ;%>
You perhaps ignore the ���� when using String variable s_description and s_status.
Hope this will help you. Good lucky! -
Mysql, JDBC, Linux and Access Denied
I have just installed a MySQL Connctor/J 2.0.14 (JDBC) to be able to connect to a MYSQL-database on a Linux-server from a java-program on the same server. But I keep on getting an access-right-error. I would be very thankfull if someone could help me.
From the linux-shell I can connect to the database with mysql:
[root@dat test]# mysql -u speciale -p specialetestDB
But when I try to connect from the Java-program I recieve the following error:
[root@dat test]# java TestDB
SQL-fejl: Invalid authorization specification: Access denied for user: 'speciale@dat' (Using password: YES)
The program Is very simple:
import java.sql.*;
public class TestDB {
public static void main(String[] args) {
try {
Class.forName("com.mysql.jdbc.Driver").newInstance();
Connection connection = DriverManager.getConnection(
"jdbc:mysql://localhost/specialetestDB?user=speciale&password=x");
Statement statement = connection.createStatement();
ResultSet resultSet = statement.executeQuery(
"Select Vnavn from VidensElement");
while (resultSet.next())
System.out.println(resultSet.getString("Vnavn"));
statement.close();
connection.close();
catch (SQLException sqlException) {
System.out.println("SQL-fejl: " + sqlException.getMessage());
catch (ClassNotFoundException classNotFoundException) {
System.out.println("Driver ikke fundet: " +
classNotFoundException.getMessage());
catch (Exception instantiationException) {
System.out.println("Driver kan ikke instantieres: " +
instantiationException.getMessage());
Sannethe password you have listed as what you use fromthe
shell vs. what you have in yoour code are not the
same. they need to be the same.
other than that make sure you user account in mysqlis
set up to accept connections from wherever you needit
to. Thanks,
The passwords are the same - I just didn't show it in
the copied text. Actually the shell-dialog is:
From the linux-shell I can connect to the database
with mysql:
[root@dat test]# mysql -u speciale -p specialetestDB
password: x
sorry my fault, but it probably was worth checking
But what you said about my user accounts might be the
problem In the mysql.user tabel I have 3 instances of
the "speciale" user, each with a different host: "%",
"dat" and "localhost".
Is that what you ment?
yes. it is possible that the passwords are not the same. so the password for speciale from localhost is not the same as from % or dat. why don't you delete the dat and localhost ones and just leave the % one. -
Mysql-jdbc applet connection issue
I am developing a user interface for a mysql database. I am able to successfully access the db and execute queries through a java APPLICATION.
I need to do the same (access the db (mysql)) through a java APPLET. When I compile the applet it complies fine. When I try to run the applet I'm getting the following error message:
java.lang.ClassNotFoundException: com.mysql.jdbc.Driver
I tied running the applet using appletviewer and through a web browser, same result. I can run the application from the same command prompt it works fine.
Please help.
Relevant info:
OS: Linux, Fedora4
Classpath: export set CLASSPATH=/home/xyz/Java/mysql-connector-java-5.0.5/:$CLASSPATH;
JDK: PATH=/usr/java/jdk1.6.0/bin
Program:
import java.sql.*;
public class b extends java.applet.Applet
int y = 0;
public void paint(java.awt.Graphics g)
y = y + 10;
Connection conn = null;
String driver = "com.mysql.jdbc.Driver";
String url = "jdbc:mysql://localhost:3306/testdb?user=usr1234&password=xyzxyz";
try {
Class.forName(driver).newInstance();
conn = DriverManager.getConnection(url);
System.out.println("Connected to the database.");
System.out.println(" ");
//*********BLOCK TO RETRIEVE RECORDS FROM TABLE*********
try{
Statement st = conn.createStatement();
ResultSet res = st.executeQuery("SELECT * FROM table1");
System.out.println("Name: " + "\t" + "Age: ");
while (res.next()) {
String s = res.getString("name");
int i = res.getInt("age");
System.out.println(s + "\t" + i);
catch (SQLException s){
y = y + 20;
g.drawString("******* s: "+s,50,y);
//*********END OF BLOCK TO RETRIEVE RECORDS FROM TABLE*********
conn.close();
System.out.println("Disconnected from database");
} catch (Exception e) {
y = y + 20;
g.drawString("******* e: "+e,50,y);
e.printStackTrace();
Thanks for the help in advance.
--MatFirst, accessing a database from an applet is a horrendous idea.
Having said that, did you add the mysql jar to the applet tag in the html page (in the archive property)? -
<%@ page import = "java.io.*, java.util.*,java.net.URL,java.awt.*,java.lang.*,java.sql.*" %>
<HTML>
<head></head>
<body>
<%
ResultSet rs;
Statement stmt;
try {
Class.forName("com.mysql.jdbc.Driver").newInstance();
Connection conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/petrofed?user=petrofed&password=petro");
String sql = "SELECT * FROM sample";
stmt = conn.createStatement();
rs = stmt.executeQuery(sql);
while (rs.next())
out.println(rs.getString(1));
out.println(rs.getString(2));
// Do something with the Connection
} catch (SQLException ex) {
// handle any errors
out.println("SQLException: " + ex.getMessage());
out.println("SQLState: " + ex.getSQLState());
out.println("VendorError: " + ex.getErrorCode());
catch (ClassNotFoundException cnfex)
out.println("SQLException: " + cnfex.getMessage());
%>
</body>
</html>
Getting following error after uploading it on the Server
SQLException: Communications link failure due to underlying exception: ** BEGIN NESTED EXCEPTION ** java.security.AccessControlException MESSAGE: access denied (java.net.SocketPermission localhost resolve) STACKTRACE: java.security.AccessControlException: access denied (java.net.SocketPermission localhost resolve) at java.security.AccessControlContext.checkPermission(AccessControlContext.java:269) at java.security.AccessController.checkPermission(AccessController.java:401) at java.lang.SecurityManager.checkPermission(SecurityManager.java:524) at java.lang.SecurityManager.checkConnect(SecurityManager.java:1023) at java.net.InetAddress.getAllByName0(InetAddress.java:1000) at java.net.InetAddress.getAllByName0(InetAddress.java:981) at java.net.InetAddress.getAllByName(InetAddress.java:975) at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:133) at com.mysql.jdbc.MysqlIO.(MysqlIO.java:281) at com.mysql.jdbc.Connection.createNewIO(Connection.java:1696) at com.mysql.jdbc.Connection.(Connection.java:408) at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:270) at java.sql.DriverManager.getConnection(DriverManager.java:512) at java.sql.DriverManager.getConnection(DriverManager.java:193) at org.apache.jsp.mysqldb2_jsp._jspService(mysqldb2_jsp.java:59) at org.apache.jasper.runtime.HttpJspBase.service(Unknown Source) at javax.servlet.http.HttpServlet.service(HttpServlet.java) at org.apache.jasper.servlet.JspServletWrapper.service(Unknown Source) at org.apache.jasper.servlet.JspServlet.serviceJspFile(Unknown Source) at org.apache.jasper.servlet.JspServlet.service(Unknown Source) at javax.servlet.http.HttpServlet.service(HttpServlet.java) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Unknown Source) at org.apache.catalina.core.ApplicationFilterChain.access$0(Unknown Source) at org.apache.catalina.core.ApplicationFilterChain$1.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at org.apache.catalina.core.ApplicationFilterChain.doFilter(Unknown Source) at org.apache.catalina.core.StandardWrapperValve.invoke(Unknown Source) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(Unknown Source) at org.apache.catalina.core.StandardPipeline.invoke(Unknown Source) at org.apache.catalina.core.ContainerBase.invoke(Unknown Source) at org.apache.catalina.core.StandardContextValve.invoke(Unknown Source) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(Unknown Source) at org.apache.catalina.core.StandardPipeline.invoke(Unknown Source) at org.apache.catalina.core.ContainerBase.invoke(Unknown Source) at org.apache.catalina.core.StandardContext.invoke(Unknown Source) at org.apache.catalina.core.StandardHostValve.invoke(Unknown Source) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(Unknown Source) at org.apache.catalina.valves.ErrorDispatcherValve.invoke(Unknown Source) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(Unknown Source) at org.apache.catalina.valves.ErrorReportValve.invoke(Unknown Source) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(Unknown Source) at org.apache.catalina.core.StandardPipeline.invoke(Unknown Source) at org.apache.catalina.core.ContainerBase.invoke(Unknown Source) at org.apache.catalina.core.StandardEngineValve.invoke(Unknown Source) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(Unknown Source) at org.apache.catalina.core.StandardPipeline.invoke(Unknown Source) at org.apache.catalina.core.ContainerBase.invoke(Unknown Source) at org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:223) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:594) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:392) at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:565) at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:619) at java.lang.Thread.run(Thread.java:534) ** END NESTED EXCEPTION ** SQLState: 08S01 VendorError: 0Tomcat is running with a Java security manager that doesn't let your application connect via sockets to applications outside Tomcat. You could perhaps fix this by configuring Tomcat with a security policy that does permit that, but don't ask me how to do that. I would fix the problem by using connection pools that are (I believe) built into Tomcat.
-
How to make MySQL JDBC Driver case-insensitive
Hi,
I'm porting a jdbc application from oracle to mysql. One of the problem is that oracle's column names are case insensitive, whereas CODE in mySql is different from code (see example posted below).
I know that I can change the source code to use always the same case. But is there a way to make the mysql jdbc driver case-insensitive ?
import java.sql.*;
/* getString(String) is case sensitive for org.gjt.mm.mysql.Driver driver */
mysql> describe currency;
+-----------------+----------------+------+-----+----------------+-------+
| Field | Type | Null | Key | Default | Extra |
+-----------------+----------------+------+-----+----------------+-------+
| code | char(3) | | PRI | | |
| name | varchar(40) | | UNI | | |
| shortCode | char(2) | YES | MUL | NULL | |
| exchangeRate | decimal(19,12) | | | 0.000000000000 | |
| changed | decimal(1,0) | | | 0 | |
| markedFlag | decimal(1,0) | | | 0 | |
| updateTimestamp | timestamp(14) | YES | | NULL | |
+-----------------+----------------+------+-----+----------------+-------+
7 rows in set (0.00 sec)
getObject(1)=EUR
Trying code
getObject("code")=EUR
Trying Code
java.sql.SQLException: Column 'Code' not found.
at org.gjt.mm.mysql.ResultSet.findColumn(ResultSet.java:1213)
at org.gjt.mm.mysql.ResultSet.getObject(ResultSet.java:1188)
at mySqlDemo.main(mySqlDemo.java:61)
getObject(1)=USD
Trying code
getObject("code")=USD
Trying Code
java.sql.SQLException: Column 'Code' not found.
at org.gjt.mm.mysql.ResultSet.findColumn(ResultSet.java:1213)
at org.gjt.mm.mysql.ResultSet.getObject(ResultSet.java:1188)
at mySqlDemo.main(mySqlDemo.java:61)
public class mySqlDemo {
public final static void main(String[] args) {
try {
/*== database constants ==*/
String DBHOST = "localhost";
String DBNAME = "test";
String DBUSER = "test";
String DBPASS = "";
String DBDRIVER = "org.gjt.mm.mysql.Driver";
/*== setup database driver and connect ==*/
Class.forName(DBDRIVER).newInstance();
String conurl = "jdbc:mysql://"+DBHOST+"/"+DBNAME;
Connection db = DriverManager.getConnection(conurl,DBUSER,DBPASS);
/*== create sql query and execute ==*/
//String sql = "select code from currency";
String sql = "select Currency.code, Currency.name, Currency.shortCode, Currency.exchangeRate, Currency.changed, Currency.markedFlag, Currency.updateTimestamp from Currency order by code";
Statement stmnt = db.createStatement();
ResultSet rs = stmnt.executeQuery(sql);
/*== display results ==*/
while(rs.next()) {
System.out.println("getObject(1)=" + rs.getObject(1));
// works, because "Currency.code" has been selected
System.out.println("Trying code");
try {
System.out.println("getObject(\"code\")=" + rs.getObject("code"));
} catch(SQLException ex) {
ex.printStackTrace();
// case sensitive !
// does not work, because "Currency.code" has been selected
// "code" != "Code"
System.out.println("Trying Code");
try {
System.out.println("getObject(\"Code\")=" + rs.getObject("Code"));
} catch(SQLException ex) {
ex.printStackTrace();
} catch(Throwable t) {
t.printStackTrace();
}One of the problem is that oracle's column names are
case insensitive, whereas CODE in mySql is different from code (see example posted below).I doubt that.
SQL standards are rather specific that columns names are case insensitive unless quoted identifiers are used. And presumably you are doing that.
What you are seeing is a difference in drivers not databases.
I would guess that the only way to change the behaviour is to modify your code. If you uppercase everything it should work. Or you could use positional rather than named column extraction. -
MySQL -- JDBC Connection help !!!
Hi everybody...Well I have MySQL Server and Java, I get the JDBC and tried this:
import java.sql.*;
public class JdbcE {
public static void main(String args[]) {
Connection con = null;
try {
Class.forName("com.mysql.jdbc.Driver").newInstance();
con = DriverManager.getConnection("jdbc:mysql://localhost/test", "user", "pass");
if(!con.isClosed())
System.out.println("Successfully connected to MySQL server...");
} catch(Exception e) {
System.err.println("Exception: " + e.getMessage());
} finally {
try {
if(con != null)
con.close();
} catch(SQLException e) {}
And with that code all works fine...but when I change the Host from LOCALHOST to [ROUTER IP] like this:
con = DriverManager.getConnection("jdbc:mysql://182.185.145.12/test", "user", "pass");
I got this exception:
Exception: Communications link failure due to underlying exception:
** BEGIN NESTED EXCEPTION **
java.net.SocketException
MESSAGE: java.net.ConnectException: Connection timed out: connect
STACKTRACE:
java.net.SocketException: java.net.ConnectException: Connection timed out: conne
ct
at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.ja
va:156)
at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:276)
at com.mysql.jdbc.Connection.createNewIO(Connection.java:2666)
at com.mysql.jdbc.Connection.<init>(Connection.java:1531)
at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java
:266)
at java.sql.DriverManager.getConnection(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
at JdbcE.main(JdbcE.java:11)
** END NESTED EXCEPTION **
Last packet sent to the server was 16 ms ago.
I don't know how to solve it...
I have a 2wire 1700HG router, maybe it would be a problem of the firewall can anyone help me to solve this problem??Well I sorry...I am very new in this kind of things...I just know that I have a 2wire 1700HG, I have installed MySQL Server, Java and mysql-connector-java...
When I try this in the connection statement:
con = DriverManager.getConnection("jdbc:mysql://localhost/test", "user", "test");
Everything works fine...but when I try this to connect from a remote PC
con = DriverManager.getConnection("jdbc:mysql://189.145.185.182/test", "user", "test");
This error comes out on screen:
Exception: Communications link failure due to underlying exception:
** BEGIN NESTED EXCEPTION **
java.net.SocketException
MESSAGE: java.net.ConnectException: Connection timed out: connect
STACKTRACE:
java.net.SocketException: java.net.ConnectException: Connection timed out: conne
ct
at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.ja
va:156)
at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:276)
at com.mysql.jdbc.Connection.createNewIO(Connection.java:2666)
at com.mysql.jdbc.Connection.<init>(Connection.java:1531)
at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java
:266)
at java.sql.DriverManager.getConnection(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
at JdbcE.main(JdbcE.java:11)
** END NESTED EXCEPTION **
Last packet sent to the server was 16 ms ago.
I don't know what can I do :S please help!! :D -
Why my MySQL JDBC Connect fail??
Dear friends:
I have following code:
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
public class JdbcExample2 {
public static void main(String args[]) {
Connection con = null;
try {
Class.forName("com.mysql.jdbc.Driver").newInstance();
//jdbc:mysql://host_name:port/dbname
// con = DriverManager.getConnection("jdbc:MySQL:///test","admin", "admin");
con = DriverManager.getConnection("jdbc:MySQL://localhost:3306/test","admin", "admin");
if(!con.isClosed())
System.out.println("Successfully connected to " +
"MySQL server using TCP/IP...");
} catch(Exception e) {
System.err.println("Exception: " + e.getMessage());
} finally {
try {
if(con != null)
con.close();
} catch(SQLException e) {}
}But when I run , I got following error:
Exception: com.mysql.jdbc.Driver
My question is:
[1]. when I connect to MySQL Server through mySQL Client, I got
Enter password: *****
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 18 to server version: 4.1.21-community-nt
Type 'help;' or '\h' for help. Type '\c' to clear the buffer.
mysql>
how Can I determine MySQL Server name?? I forgot when I install, maybe MySQL is my SQL Server name
[2]. Do I need to creat a user DSN name or System DSN name for MySQL Server?? which one is best??
How to do it??
[3]. How to make above simple JDBC program runnable??
Thanks
sunny
Message was edited by:
sunnymanmanThanks, see new errors:
C:\Project\java>java Jdbc11
Copyright 2004, R.G.Baldwin
java.sql.SQLException: Access denied for user 'admin'@'localhost' (using password: YES)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:946)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2941)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:868)
at com.mysql.jdbc.MysqlIO.secureAuth411(MysqlIO.java:3340)
at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1238)
at com.mysql.jdbc.Connection.createNewIO(Connection.java:2743)
at com.mysql.jdbc.Connection.<init>(Connection.java:1553)
at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:266)
at java.sql.DriverManager.getConnection(DriverManager.java:512)
at java.sql.DriverManager.getConnection(DriverManager.java:171)
at Jdbc11.main(Jdbc11.java:23)
C:\Project\java>
any idea??
here Jdbc11.java:23 is:
Connection con = DriverManager.getConnection(
url,"admin", "YES");
my userID/Password = admin/admin;
sunny
Message was edited by:
sunnymanman -
IDM 8.0 would not pick up MySQL jdbc driver.
I am trying to create database table using "create new resources" in IDM.
With orcale, I have no issue. I copy a jdbc driver to C:\idm8\WEB-INF\lib and rename it
oraclejdbc.jar.
However, after I copyed mysql-connector-java-5.1.5-bin.jar ( which works with netbean and MySQL server on
my PC) into the same C:\idm8\WEB-INF\lib directory ( and i tried rename it mysqljdbc.jar too),
Database Type: MySQL
JDBC Driver: com.mysql.jdbc.Driver
JDBC URL TEmplate: jdbc:mysql://localhost:3306/test
Host: localhost
TCP Port: 3306
Database: test
I got an error:
XPRESS <invoke> exception:
Can't call method getTableData on class com.waveset.ui.web.resources.wizard.DBTableUtil
==> com.waveset.util.WavesetException: ==> java.sql.SQLException: No suitable driver found for jdbc:mysql://localhost:3306/test
Then I tried the case where I replace localhost with IP Address and th ecase I use Fully qulified
PC name, I got the same error.
I know that the driver works because it is being used in NetBeans6.1
I also tried mysql-connector-java-5.1.6-bin.jar with the same results.
Does anyone have any ideas?
Thanks!Could your issue be with this line here:
JDBC URL Template: jdbc:mysql://localhost:3306/testI believe it should be something like this: (As chapo pointed out)
JDBC URL template: jdbc:mysql://%h:%p/%dThe template is exactly that, a template.. The values are filled in by the next three entries -
"com.mysql.jdbc.PacketTooBigException": Help needed urgently
hi,
I am using mm.mysql j/connector ver 3.0.6 and MYSQL server version 4.0.
Max_allowed packet= 8MB at the server side
I am getting PacketTooBigException when i am trying to update a particular column.
What should i do.
Any help will be greatly appreciated!!!the driver uses a 64 k max packet size by default. it is supposed to change this as neccessary upon connection but perhaps that is failing?
below is the 3.0.7 connection code that i have slightly modified for you so that it prints out the connection properties after they have been initialized so that you can see what they are.
try it out and i hope you find this helpful.
Copyright (C) 2002 MySQL AB
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
/*Slight Modification by Max Stocker April 29, 2003 to trace what the connection values get initialized to. */
package com.mysql.jdbc;
import java.io.IOException;
import java.io.InputStream;
import java.io.Reader;
import java.io.UnsupportedEncodingException;
import java.math.BigDecimal;
import java.net.URL;
import java.sql.Clob;
import java.sql.Date;
import java.sql.ParameterMetaData;
import java.sql.Ref;
import java.sql.SQLException;
import java.sql.Savepoint;
import java.sql.Time;
import java.sql.Timestamp;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import java.util.StringTokenizer;
import java.util.TimeZone;
* A Connection represents a session with a specific database. Within the
* context of a Connection, SQL statements are executed and results are
* returned.
* <P>A Connection's database is able to provide information describing
* its tables, its supported SQL grammar, its stored procedures, the
* capabilities of this connection, etc. This information is obtained
* with the getMetaData method.
* @see java.sql.Connection
* @author Mark Matthews
* @version $Id: Connection.java,v 1.31.2.19 2003/03/28 22:42:24 mmatthew Exp $
public class Connection implements java.sql.Connection {
// The command used to "ping" the database.
// Newer versions of MySQL server have a ping() command,
// but this works for everything
private static final String PING_COMMAND = "SELECT 1";
* Map mysql transaction isolation level name to
* java.sql.Connection.TRANSACTION_XXX
private static Map mapTransIsolationName2Value = null;
* The mapping between MySQL charset names
* and Java charset names.
* Initialized by loadCharacterSetMapping()
private static Map charsetMap;
* Table of multi-byte charsets.
* Initialized by loadCharacterSetMapping()
private static Map multibyteCharsetsMap;
* Default socket factory classname
private static final String DEFAULT_SOCKET_FACTORY = StandardSocketFactory.class
.getName();
static {
loadCharacterSetMapping();
mapTransIsolationName2Value = new HashMap(8);
mapTransIsolationName2Value.put("READ-UNCOMMITED",
new Integer(TRANSACTION_READ_UNCOMMITTED));
mapTransIsolationName2Value.put("READ-UNCOMMITTED",
new Integer(TRANSACTION_READ_UNCOMMITTED));
mapTransIsolationName2Value.put("READ-COMMITTED",
new Integer(TRANSACTION_READ_COMMITTED));
mapTransIsolationName2Value.put("REPEATABLE-READ",
new Integer(TRANSACTION_REPEATABLE_READ));
mapTransIsolationName2Value.put("SERIALIZABLE",
new Integer(TRANSACTION_SERIALIZABLE));
* Internal DBMD to use for various database-version
* specific features
private DatabaseMetaData dbmd = null;
* The list of host(s) to try and connect to
private List hostList = null;
* A map of statements that have had setMaxRows() called on them
private Map statementsUsingMaxRows;
* The I/O abstraction interface (network conn to
* MySQL server
private MysqlIO io = null;
* Mutex
private final Object mutex = new Object();
* The driver instance that created us
private NonRegisteringDriver myDriver;
* The map of server variables that we retrieve
* at connection init.
private Map serverVariables = null;
* Properties for this connection specified by user
private Properties props = null;
* The database we're currently using
* (called Catalog in JDBC terms).
private String database = null;
* If we're doing unicode character conversions,
* what encoding do we use?
private String encoding = null;
* The hostname we're connected to
private String host = null;
* The JDBC URL we're using
private String myURL = null;
* The password we used
private String password = null;
* Classname for socket factory
private String socketFactoryClassName = null;
* The user we're connected as
private String user = null;
* The timezone of the server
private TimeZone serverTimezone = null;
* Allow LOAD LOCAL INFILE (defaults to true)
private boolean allowLoadLocalInfile = true;
* Are we in autoCommit mode?
private boolean autoCommit = true;
* Should we capitalize mysql types
private boolean capitalizeDBMDTypes = false;
* Should we continue processing batch commands if
* one fails. The JDBC spec allows either way, so
* we let the user choose
private boolean continueBatchOnError = true;
* Should we do unicode character conversions?
private boolean doUnicode = false;
* Are we failed-over to a non-master host
private boolean failedOver = false;
/** Does the server suuport isolation levels? */
private boolean hasIsolationLevels = false;
* Does this version of MySQL support quoted identifiers?
private boolean hasQuotedIdentifiers = false;
// This is for the high availability :) routines
private boolean highAvailability = false;
* Has this connection been closed?
private boolean isClosed = true;
* Should we tell MySQL that we're an interactive client?
private boolean isInteractiveClient = false;
* Is the server configured to use lower-case
* table names only?
private boolean lowerCaseTableNames = false;
* Has the max-rows setting been changed from
* the default?
private boolean maxRowsChanged = false;
* Do we expose sensitive information in exception
* and error messages?
private boolean paranoid = false;
* Should we do 'extra' sanity checks?
private boolean pedantic = false;
* Are we in read-only mode?
private boolean readOnly = false;
/** Do we relax the autoCommit semantics? (For enhydra, for example) */
private boolean relaxAutoCommit = false;
* Do we need to correct endpoint rounding errors
private boolean strictFloatingPoint = false;
* Do we check all keys for updatable result sets?
private boolean strictUpdates = true;
/** Are transactions supported by the MySQL server we are connected to? */
private boolean transactionsSupported = false;
* Has ANSI_QUOTES been enabled on the server?
private boolean useAnsiQuotes = false;
* Should we use compression?
private boolean useCompression = false;
* Can we use the "ping" command rather than a
* query?
private boolean useFastPing = false;
* Should we tack on @hostname in DBMD.getTable/ColumnPrivileges()?
private boolean useHostsInPrivileges = true;
* Should we use SSL?
private boolean useSSL = false;
* Should we use stream lengths in prepared statements?
* (true by default == JDBC compliant)
private boolean useStreamLengthsInPrepStmts = true;
* Should we use timezone information?
private boolean useTimezone = false;
/** Should we return PreparedStatements for UltraDev's stupid bug? */
private boolean useUltraDevWorkAround = false;
private double initialTimeout = 2.0D;
* How many hosts are in the host list?
private int hostListSize = 0;
* isolation level
private int isolationLevel = java.sql.Connection.TRANSACTION_READ_COMMITTED;
* The largest packet we can send (changed
* once we know what the server supports, we
* get this at connection init).
private int maxAllowedPacket = 65536;
private int maxReconnects = 3;
* The max rows that a result set can contain.
* Defaults to -1, which according to the JDBC
* spec means "all".
private int maxRows = -1;
private int netBufferLength = 16384;
* The port number we're connected to
* (defaults to 3306)
private int port = 3306;
* How many queries should we wait before we try to re-connect
* to the master, when we are failing over to replicated hosts
* Defaults to 50
private int queriesBeforeRetryMaster = 50;
* What should we set the socket timeout to?
private int socketTimeout = 0; // infinite
* When did the last query finish?
private long lastQueryFinishedTime = 0;
* When did the master fail?
private long masterFailTimeMillis = 0L;
* Number of queries we've issued since the master
* failed
private long queriesIssuedFailedOver = 0;
* How many seconds should we wait before retrying to connect
* to the master if failed over? We fall back when either
* queriesBeforeRetryMaster or secondsBeforeRetryMaster is
* reached.
private long secondsBeforeRetryMaster = 30L;
* The type map for UDTs (not implemented, but used by
* some third-party vendors, most notably IBM WebSphere)
private Map typeMap;
* Ignore non-transactional table warning for rollback?
private boolean ignoreNonTxTables = false;
* Creates a connection to a MySQL Server.
* @param host the hostname of the database server
* @param port the port number the server is listening on
* @param info a Properties[] list holding the user and password
* @param database the database to connect to
* @param url the URL of the connection
* @param d the Driver instantation of the connection
* @exception java.sql.SQLException if a database access error occurs
Connection(String host, int port, Properties info, String database,
String url, NonRegisteringDriver d) throws java.sql.SQLException {
if (Driver.TRACE) {
Object[] args = { host, new Integer(port), info, database, url, d };
Debug.methodCall(this, "constructor", args);
this.serverVariables = new HashMap();
hostList = new ArrayList();
if (host == null) {
this.host = "localhost";
hostList.add(this.host);
} else if (host.indexOf(",") != -1) {
// multiple hosts separated by commas (failover)
StringTokenizer hostTokenizer = new StringTokenizer(host, ",", false);
while (hostTokenizer.hasMoreTokens()) {
hostList.add(hostTokenizer.nextToken().trim());
} else {
this.host = host;
hostList.add(this.host);
hostListSize = hostList.size();
this.port = port;
if (database == null) {
throw new SQLException("Malformed URL '" + url + "'.", "S1000");
this.database = database;
this.myURL = url;
this.myDriver = d;
this.user = info.getProperty("user");
this.password = info.getProperty("password");
if ((this.user == null) || this.user.equals("")) {
this.user = "nobody";
if (this.password == null) {
this.password = "";
this.props = info;
initializeDriverProperties(info);
if (Driver.DEBUG) {
System.out.println("Connect: " + this.user + " to " + this.database);
try {
createNewIO(false);
this.dbmd = new DatabaseMetaData(this, this.database);
} catch (java.sql.SQLException ex) {
cleanup();
// don't clobber SQL exceptions
throw ex;
} catch (Exception ex) {
cleanup();
StringBuffer mesg = new StringBuffer();
if (!useParanoidErrorMessages()) {
mesg.append("Cannot connect to MySQL server on ");
mesg.append(this.host);
mesg.append(":");
mesg.append(this.port);
mesg.append(".\n\n");
mesg.append("Make sure that there is a MySQL server ");
mesg.append("running on the machine/port you are trying ");
mesg.append(
"to connect to and that the machine this software is "
+ "running on ");
mesg.append("is able to connect to this host/port "
+ "(i.e. not firewalled). ");
mesg.append(
"Also make sure that the server has not been started "
+ "with the --skip-networking ");
mesg.append("flag.\n\n");
} else {
mesg.append("Unable to connect to database.");
mesg.append("Underlying exception: \n\n");
mesg.append(ex.getClass().getName());
throw new java.sql.SQLException(mesg.toString(), "08S01");
* If a connection is in auto-commit mode, than all its SQL
* statements will be executed and committed as individual
* transactions. Otherwise, its SQL statements are grouped
* into transactions that are terminated by either commit()
* or rollback(). By default, new connections are in auto-
* commit mode. The commit occurs when the statement completes
* or the next execute occurs, whichever comes first. In the
* case of statements returning a ResultSet, the statement
* completes when the last row of the ResultSet has been retrieved
* or the ResultSet has been closed. In advanced cases, a single
* statement may return multiple results as well as output parameter
* values. Here the commit occurs when all results and output param
* values have been retrieved.
* <p><b>Note:</b> MySQL does not support transactions, so this
* method is a no-op.
* @param autoCommit - true enables auto-commit; false disables it
* @exception java.sql.SQLException if a database access error occurs
public void setAutoCommit(boolean autoCommit) throws java.sql.SQLException {
if (Driver.TRACE) {
Object[] args = { new Boolean(autoCommit) };
Debug.methodCall(this, "setAutoCommit", args);
checkClosed();
if (this.transactionsSupported) {
// this internal value must be set first as failover depends on it
// being set to true to fail over (which is done by most
// app servers and connection pools at the end of
// a transaction), and the driver issues an implicit set
// based on this value when it (re)-connects to a server
// so the value holds across connections
this.autoCommit = autoCommit;
String sql = "SET autocommit=" + (autoCommit ? "1" : "0");
execSQL(sql, -1, this.database);
} else {
if ((autoCommit == false) && (this.relaxAutoCommit == false)) {
throw new SQLException("MySQL Versions Older than 3.23.15 "
+ "do not support transactions", "08003");
} else {
this.autoCommit = autoCommit;
return;
* gets the current auto-commit state
* @return Current state of the auto-commit mode
* @exception java.sql.SQLException (why?)
* @see setAutoCommit
public boolean getAutoCommit() throws java.sql.SQLException {
if (Driver.TRACE) {
Object[] args = new Object[0];
Debug.methodCall(this, "getAutoCommit", args);
Debug.returnValue(this, "getAutoCommit",
new Boolean(this.autoCommit));
return this.autoCommit;
* A sub-space of this Connection's database may be selected by
* setting a catalog name. If the driver does not support catalogs,
* it will silently ignore this request
* <p><b>Note:</b> MySQL's notion of catalogs are individual databases.
* @param catalog the database for this connection to use
* @throws java.sql.SQLException if a database access error occurs
public void setCatalog(String catalog) throws java.sql.SQLException {
if (Driver.TRACE) {
Object[] args = { catalog };
Debug.methodCall(this, "setCatalog", args);
checkClosed();
String quotedId = this.dbmd.getIdentifierQuoteString();
if ((quotedId == null) || quotedId.equals(" ")) {
quotedId = "";
StringBuffer query = new StringBuffer("USE ");
query.append(quotedId);
query.append(catalog);
query.append(quotedId);
execSQL(query.toString(), -1, catalog);
this.database = catalog;
* Return the connections current catalog name, or null if no
* catalog name is set, or we dont support catalogs.
* <p><b>Note:</b> MySQL's notion of catalogs are individual databases.
* @return the current catalog name or null
* @exception java.sql.SQLException if a database access error occurs
public String getCatalog() throws java.sql.SQLException {
if (Driver.TRACE) {
Object[] args = new Object[0];
Debug.methodCall(this, "getCatalog", args);
Debug.returnValue(this, "getCatalog", this.database);
return this.database;
* DOCUMENT ME!
* @return DOCUMENT ME!
public boolean isClosed() {
if (Driver.TRACE) {
Object[] args = new Object[0];
Debug.methodCall(this, "isClosed", args);
Debug.returnValue(this, "isClosed", new Boolean(this.isClosed));
return this.isClosed;
* Returns the character encoding for this Connection
* @return the character encoding for this connection.
public String getEncoding() {
return this.encoding;
* @see Connection#setHoldability(int)
public void setHoldability(int arg0) throws SQLException {
// do nothing
* @see Connection#getHoldability()
public int getHoldability() throws SQLException {
return ResultSet.CLOSE_CURSORS_AT_COMMIT;
* NOT JDBC-Compliant, but clients can use this method
* to determine how long this connection has been idle.
* This time (reported in milliseconds) is updated once
* a query has completed.
* @return number of ms that this connection has
* been idle, 0 if the driver is busy retrieving results.
public long getIdleFor() {
if (this.lastQueryFinishedTime == 0) {
return 0;
} else {
long now = System.currentTimeMillis();
long idleTime = now - this.lastQueryFinishedTime;
return idleTime;
* Should we tell MySQL that we're an interactive client
* @return true if isInteractiveClient was set to true.
public boolean isInteractiveClient() {
return isInteractiveClient;
* A connection's database is able to provide information describing
* its tables, its supported SQL grammar, its stored procedures, the
* capabilities of this connection, etc. This information is made
* available through a DatabaseMetaData object.
* @return a DatabaseMetaData object for this connection
* @exception java.sql.SQLException if a database access error occurs
public java.sql.DatabaseMetaData getMetaData() throws java.sql.SQLException {
checkClosed();
return new DatabaseMetaData(this, this.database);
* You can put a connection in read-only mode as a hint to enable
* database optimizations
* <B>Note:</B> setReadOnly cannot be called while in the middle
* of a transaction
* @param readOnly - true enables read-only mode; false disables it
* @exception java.sql.SQLException if a database access error occurs
public void setReadOnly(boolean readOnly) throws java.sql.SQLException {
if (Driver.TRACE) {
Object[] args = { new Boolean(readOnly) };
Debug.methodCall(this, "setReadOnly", args);
Debug.returnValue(this, "setReadOnly", new Boolean(readOnly));
checkClosed();
this.readOnly = readOnly;
* Tests to see if the connection is in Read Only Mode. Note that
* we cannot really put the database in read only mode, but we pretend
* we can by returning the value of the readOnly flag
* @return true if the connection is read only
* @exception java.sql.SQLException if a database access error occurs
public boolean isReadOnly() throws java.sql.SQLException {
if (Driver.TRACE) {
Object[] args = new Object[0];
Debug.methodCall(this, "isReadOnly", args);
Debug.returnValue(this, "isReadOnly", new Boolean(this.readOnly));
return this.readOnly;
* @see Connection#setSavepoint()
public java.sql.Savepoint setSavepoint() throws SQLException {
throw new NotImplemented();
* @see Connection#setSavepoint(String)
public java.sql.Savepoint setSavepoint(String arg0)
throws SQLException {
throw new NotImplemented();
* DOCUMENT ME!
* @return DOCUMENT ME!
public TimeZone getServerTimezone() {
return this.serverTimezone;
* DOCUMENT ME!
* @param level DOCUMENT ME!
* @throws java.sql.SQLException DOCUMENT ME!
public void setTransactionIsolation(int level) throws java.sql.SQLException {
if (Driver.TRACE) {
Object[] args = { new Integer(level) };
Debug.methodCall(this, "setTransactionIsolation", args);
checkClosed();
if (this.hasIsolationLevels) {
StringBuffer sql = new StringBuffer(
"SET SESSION TRANSACTION ISOLATION LEVEL ");
switch (level) {
case java.sql.Connection.TRANSACTION_NONE:
throw new SQLException("Transaction isolation level "
+ "NONE not supported by MySQL");
case java.sql.Connection.TRANSACTION_READ_COMMITTED:
sql.append("READ COMMITTED");
break;
case java.sql.Connection.TRANSACTION_READ_UNCOMMITTED:
sql.append("READ UNCOMMITTED");
break;
case java.sql.Connection.TRANSACTION_REPEATABLE_READ:
sql.append("REPEATABLE READ");
break;
case java.sql.Connection.TRANSACTION_SERIALIZABLE:
sql.append("SERIALIZABLE");
break;
default:
throw new SQLException("Unsupported transaction "
+ "isolation level '" + level + "'", "S1C00");
execSQL(sql.toString(), -1, this.database);
isolationLevel = level;
} else {
throw new java.sql.SQLException("Transaction Isolation Levels are "
+ "not supported on MySQL versions older than 3.23.36.", "S1C00");
* Get this Connection's current transaction isolation mode.
* @return the current TRANSACTION_* mode value
* @exception java.sql.SQLException if a database access error occurs
public int getTransactionIsolation() throws java.sql.SQLException {
if (Driver.TRACE) {
Object[] args = new Object[0];
Debug.methodCall(this, "getTransactionIsolation", args);
Debug.returnValue(this, "getTransactionIsolation",
new Integer(isolationLevel));
if (this.hasIsolationLevels) {
java.sql.Statement stmt = null;
java.sql.ResultSet rs = null;
try {
stmt = this.createStatement();
String query = null;
if (this.io.versionMeetsMinimum(4, 0, 3)) {
query = "SHOW VARIABLES LIKE 'tx_isolation'";
} else {
query = "SHOW VARIABLES LIKE 'transaction_isolation'";
rs = stmt.executeQuery(query);
if (rs.next()) {
String s = rs.getString(2);
if (s != null) {
Integer intTI = (Integer) mapTransIsolationName2Value.get(s);
if (intTI != null) {
return intTI.intValue();
throw new SQLException("Could not map transaction isolation '" + s + " to a valid JDBC level.", "S1000");
} else {
throw new SQLException("Could not retrieve transaction isolation level from server", "S1000");
} finally {
if (rs != null) {
try {
rs.close();
} catch (Exception ex) {
// ignore
rs = null;
if (stmt != null) {
try {
stmt.close();
} catch (Exception ex) {
// ignore
stmt = null;
return isolationLevel;
* JDBC 2.0
* Install a type-map object as the default type-map for
* this connection
* @param map the type mapping
* @throws SQLException if a database error occurs.
public void setTypeMap(java.util.Map map) throws SQLException {
this.typeMap = map;
* JDBC 2.0
* Get the type-map object associated with this connection.
* By default, the map returned is empty.
* @return the type map
* @throws SQLException if a database error occurs
public synchronized java.util.Map getTypeMap() throws SQLException {
if (this.typeMap == null) {
this.typeMap = new HashMap();
return this.typeMap;
* The first warning reported by calls on this Connection is
* returned.
* <B>Note:</B> Sebsequent warnings will be changed to this
* java.sql.SQLWarning
* @return the first java.sql.SQLWarning or null
* @exception java.sql.SQLException if a database access error occurs
public java.sql.SQLWarning getWarnings() throws java.sql.SQLException {
if (Driver.TRACE) {
Object[] args = new Object[0];
Debug.methodCall(this, "getWarnings", args);
Debug.returnValue(this, "getWarnings", null);
return null;
* Allow use of LOAD LOCAL INFILE?
* @return true if allowLoadLocalInfile was set to true.
public boolean allowLoadLocalInfile() {
return this.allowLoadLocalInfile;
* DOCUMENT ME!
* @return DOCUMENT ME!
public boolean capitalizeDBMDTypes() {
return this.capitalizeDBMDTypes;
* After this call, getWarnings returns null until a new warning
* is reported for this connection.
* @exception java.sql.SQLException if a database access error occurs
public void clearWarnings() throws java.sql.SQLException {
if (Driver.TRACE) {
Object[] args = new Object[0];
Debug.methodCall(this, "clearWarnings", args);
// firstWarning = null;
* In some cases, it is desirable to immediately release a Connection's
* database and JDBC resources instead of waiting for them to be
* automatically released ( -
Help me with this one:java.lang.ClassNotFoundException: com.mysql.jdbc.Dri
compile and build:Successful
but when I run it...I got this msg:
init:
deps-jar:
Compiling 1 source file to C:\Documents and Settings\Administrator\Form\build\classes
compile:
run:
java.lang.ClassNotFoundException: com.mysql.jdbc.Driver
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:276)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:169)
at my.form.MyDBConnection.init(MyDBConnection.java:26)
at my.form.FormUI.<init>(FormUI.java:20)
at my.form.FormUI$40.run(FormUI.java:1094)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:273)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:183)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:173)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:168)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:160)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:121)
Java Result: 1
BUILD SUCCESSFUL (total time: 2 seconds)
I use two classes
FormUI.java and MyDBConnection.java
* MyDBConnection.java
package my.form;
import java.sql.*;
public class MyDBConnection {
private Connection myConnection;
/** Creates a new instance of MyDBConnection */
public MyDBConnection() {
public void init(){
Connection connection = null;
Statement statement = null;
try{
Class.forName("com.mysql.jdbc.Driver");
myConnection=DriverManager.getConnection(
"jdbc:mysql://localhost:3306/test,'root' "
catch(SQLException sqlException){
sqlException.printStackTrace();
System.exit(1);
catch ( ClassNotFoundException classNotFound )
classNotFound.printStackTrace();
System.exit(1);
finally
try
statement.close();
connection.close();
catch ( Exception exception )
exception.printStackTrace();
System.exit( 1 );
public Connection getMyConnection(){
return myConnection;
public void close(ResultSet rs){
if(rs !=null){
try{
rs.close();
catch(Exception e){}
public void close(java.sql.Statement stmt){
if(stmt !=null){
try{
stmt.close();
catch(Exception e){}
public void destroy(){
if(myConnection !=null){
try{
myConnection.close();
catch(Exception e){}
* FormUI.java
* Created on May 2, 2007, 10:33 AM
package my.form;
import java.sql.*;
* @author Administrator
public class FormUI extends javax.swing.JFrame {
/** Creates new form FormUI */
public FormUI() throws Exception {
mdbc=new MyDBConnection();
mdbc.init();
Connection conn=mdbc.getMyConnection();
stmt=conn.createStatement();
initComponents();
* MyDBConnection.java
/** This method is called from within the constructor to
* initialize the form.
* WARNING: Do NOT modify this code. The content of this method is
* always regenerated by the Form Editor.
// <editor-fold defaultstate="collapsed" desc=" Generated Code ">
private void initComponents() {
jPanel1 = new javax.swing.JPanel();
jLabel1 = new javax.swing.JLabel();
jLabel2 = new javax.swing.JLabel();
jLabel3 = new javax.swing.JLabel();
jLabel4 = new javax.swing.JLabel();
jTextField1 = new javax.swing.JTextField();
jTextField2 = new javax.swing.JTextField();
jTextField3 = new javax.swing.JTextField();
jTextField35 = new javax.swing.JTextField();
jPanel3 = new javax.swing.JPanel();
jLabel5 = new javax.swing.JLabel();
jTextField5 = new javax.swing.JTextField();
jLabel6 = new javax.swing.JLabel();
jTextField6 = new javax.swing.JTextField();
jLabel7 = new javax.swing.JLabel();
jTextField7 = new javax.swing.JTextField();
jLabel8 = new javax.swing.JLabel();
jTextField4 = new javax.swing.JTextField();
jLabel9 = new javax.swing.JLabel();
jTextField8 = new javax.swing.JTextField();
jLabel10 = new javax.swing.JLabel();
jTextField9 = new javax.swing.JTextField();
jLabel11 = new javax.swing.JLabel();
jTextField10 = new javax.swing.JTextField();
jLabel12 = new javax.swing.JLabel();
jTextField11 = new javax.swing.JTextField();
jLabel13 = new javax.swing.JLabel();
jTextField12 = new javax.swing.JTextField();
jLabel14 = new javax.swing.JLabel();
jTextField13 = new javax.swing.JTextField();
jLabel15 = new javax.swing.JLabel();
jPanel2 = new javax.swing.JPanel();
jLabel16 = new javax.swing.JLabel();
jTextField14 = new javax.swing.JTextField();
jLabel17 = new javax.swing.JLabel();
jTextField15 = new javax.swing.JTextField();
jLabel18 = new javax.swing.JLabel();
jTextField16 = new javax.swing.JTextField();
jLabel19 = new javax.swing.JLabel();
jTextField17 = new javax.swing.JTextField();
jLabel20 = new javax.swing.JLabel();
jTextField18 = new javax.swing.JTextField();
jLabel21 = new javax.swing.JLabel();
jTextField19 = new javax.swing.JTextField();
jLabel22 = new javax.swing.JLabel();
jTextField20 = new javax.swing.JTextField();
jLabel23 = new javax.swing.JLabel();
jTextField21 = new javax.swing.JTextField();
jLabel24 = new javax.swing.JLabel();
jTextField22 = new javax.swing.JTextField();
jLabel25 = new javax.swing.JLabel();
jTextField23 = new javax.swing.JTextField();
jLabel26 = new javax.swing.JLabel();
jTextField24 = new javax.swing.JTextField();
jLabel27 = new javax.swing.JLabel();
jTextField25 = new javax.swing.JTextField();
jLabel28 = new javax.swing.JLabel();
jTextField26 = new javax.swing.JTextField();
jLabel29 = new javax.swing.JLabel();
jTextField27 = new javax.swing.JTextField();
jLabel30 = new javax.swing.JLabel();
jTextField28 = new javax.swing.JTextField();
jLabel31 = new javax.swing.JLabel();
jTextField29 = new javax.swing.JTextField();
jLabel32 = new javax.swing.JLabel();
jTextField30 = new javax.swing.JTextField();
jLabel33 = new javax.swing.JLabel();
jTextField31 = new javax.swing.JTextField();
jLabel34 = new javax.swing.JLabel();
jTextField32 = new javax.swing.JTextField();
jLabel35 = new javax.swing.JLabel();
jTextField33 = new javax.swing.JTextField();
jLabel36 = new javax.swing.JLabel();
jTextField34 = new javax.swing.JTextField();
jButton1 = new javax.swing.JButton();
jButton2 = new javax.swing.JButton();
jLabel37 = new javax.swing.JLabel();
jLabel38 = new javax.swing.JLabel();
jTextField37 = new javax.swing.JTextField();
jTextField36 = new javax.swing.JTextField();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jPanel1.setBackground(new java.awt.Color(204, 255, 204));
jLabel1.setText("custID");
jLabel2.setText("PIN");
jLabel3.setText("Source");
jLabel4.setText("SaleDate");
jTextField1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jTextField1ActionPerformed(evt);
jTextField2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jTextField2ActionPerformed(evt);
jTextField3.setText("SourceHub");
jTextField3.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jTextField3ActionPerformed(evt);
jTextField35.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jTextField35ActionPerformed(evt);
javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
jPanel1.setLayout(jPanel1Layout);
jPanel1Layout.setHorizontalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGap(28, 28, 28)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel1)
.addComponent(jLabel2))
.addGap(15, 15, 15)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jTextField2, javax.swing.GroupLayout.DEFAULT_SIZE, 113, Short.MAX_VALUE)
.addComponent(jTextField1, javax.swing.GroupLayout.DEFAULT_SIZE, 113, Short.MAX_VALUE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 88, Short.MAX_VALUE)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addComponent(jLabel3)
.addComponent(jLabel4))
.addGap(13, 13, 13)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(jTextField35)
.addComponent(jTextField3, javax.swing.GroupLayout.DEFAULT_SIZE, 83, Short.MAX_VALUE))
.addGap(198, 198, 198))
jPanel1Layout.setVerticalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGap(21, 21, 21)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jTextField3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel1)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel3))
.addGap(18, 18, 18)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel2)
.addComponent(jTextField2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel4)
.addComponent(jTextField35, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addContainerGap(23, Short.MAX_VALUE))
jPanel3.setBackground(new java.awt.Color(204, 255, 204));
jLabel5.setText("First Name");
jTextField5.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jTextField5ActionPerformed(evt);
jLabel6.setText("Last Name");
jTextField6.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jTextField6ActionPerformed(evt);
jLabel7.setText("Address");
jTextField7.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jTextField7ActionPerformed(evt);
jLabel8.setText("City");
jTextField4.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jTextField4ActionPerformed(evt);
jLabel9.setText("ZIP");
jTextField8.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jTextField8ActionPerformed(evt);
jLabel10.setText("Sales Rep");
jTextField9.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jTextField9ActionPerformed(evt);
jLabel11.setText("Phone");
jTextField10.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jTextField10ActionPerformed(evt);
jLabel12.setText("Alt Phone");
jTextField11.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jTextField11ActionPerformed(evt);
jLabel13.setText("E-Mail");
jTextField12.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jTextField12ActionPerformed(evt);
jLabel14.setText("DateofBirth");
jTextField13.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jTextField13ActionPerformed(evt);
jPanel2.setBackground(new java.awt.Color(204, 255, 204));
jLabel16.setText("AnnualAmount");
jTextField14.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jTextField14ActionPerformed(evt);
jLabel17.setText("AnnualDay");
jTextField15.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jTextField15ActionPerformed(evt);
jLabel18.setText("AnnualMonth");
jTextField16.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jTextField16ActionPerformed(evt);
jLabel19.setText("MonthlyAmount");
jTextField17.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jTextField17ActionPerformed(evt);
jLabel20.setText("MonthlyDay");
jTextField18.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jTextField18ActionPerformed(evt);
jLabel21.setText("MonthlyStatusDate");
jTextField19.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jTextField19ActionPerformed(evt);
jLabel22.setText("AnnualStatus2");
jTextField20.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jTextField20ActionPerformed(evt);
jLabel23.setText("MonthlyStatus2");
jTextField21.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jTextField21ActionPerformed(evt);
jLabel24.setText("Plan");
jTextField22.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jTextField22ActionPerformed(evt);
jLabel25.setText("Bonus Gift");
jTextField23.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jTextField23ActionPerformed(evt);
jLabel26.setText("AccountType");
jTextField24.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jTextField24ActionPerformed(evt);
jLabel27.setText("AbaNumber");
jTextField25.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jTextField25ActionPerformed(evt);
jLabel28.setText("AccountNumber");
jTextField26.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jTextField26ActionPerformed(evt);
jLabel29.setText("BankName");
jTextField27.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jTextField27ActionPerformed(evt);
jLabel30.setText("Verification Number");
jTextField28.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jTextField28ActionPerformed(evt);
jLabel31.setText("Upsale1");
jTextField29.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jTextField29ActionPerformed(evt);
jLabel32.setText("Upsale2");
jTextField30.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jTextField30ActionPerformed(evt);
jLabel33.setText("UP1BillDate");
jTextField31.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jTextField31ActionPerformed(evt);
jLabel34.setText("UP2BillDate");
jTextField32.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jTextField32ActionPerformed(evt);
jLabel35.setText("Date-Time");
jTextField33.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jTextField33ActionPerformed(evt);
jLabel36.setText("Notes");
jTextField34.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jTextField34ActionPerformed(evt);
javax.swing.GroupLayout jPanel2Layout = new javax.swing.GroupLayout(jPanel2);
jPanel2.setLayout(jPanel2Layout);
jPanel2Layout.setHorizontalGroup(
jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel2Layout.createSequentialGroup()
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel2Layout.createSequentialGroup()
.addContainerGap()
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel16)
.addComponent(jLabel19)
.addComponent(jLabel22)))
.addGroup(jPanel2Layout.createSequentialGroup()
.addGap(34, 34, 34)
.addComponent(jLabel24))
.addGroup(jPanel2Layout.createSequentialGroup()
.addContainerGap()
.addComponent(jLabel26))
.addGroup(jPanel2Layout.createSequentialGroup()
.addGap(23, 23, 23)
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel29)
.addGroup(jPanel2Layout.createSequentialGroup()
.addGap(2, 2, 2)
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addComponent(jLabel31)
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel35)
.addComponent(jLabel33)))))))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel2Layout.createSequentialGroup()
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(jTextField24)
.addComponent(jTextField22)
.addComponent(jTextField20)
.addComponent(jTextField17)
.addComponent(jTextField14, javax.swing.GroupLayout.DEFAULT_SIZE, 71, Short.MAX_VALUE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addGroup(jPanel2Layout.createSequentialGroup()
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel17)
.addComponent(jLabel20))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(jTextField18)
.addComponent(jTextField15, javax.swing.GroupLayout.DEFAULT_SIZE, 73, Short.MAX_VALUE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel2Layout.createSequentialGroup()
.addComponent(jLabel18)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jTextField16, javax.swing.GroupLayout.PREFERRED_SIZE, 85, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(jPanel2Layout.createSequentialGroup()
.addComponent(jLabel21)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jTextField19, javax.swing.GroupLayout.PREFERRED_SIZE, 80, javax.swing.GroupLayout.PREFERRED_SIZE))))
.addGroup(jPanel2Layout.createSequentialGroup()
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addComponent(jLabel27)
.addComponent(jLabel25)
.addComponent(jLabel23))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(jTextField25)
.addComponent(jTextField23)
.addComponent(jTextField21, javax.swing.GroupLayout.DEFAULT_SIZE, 72, Short.MAX_VALUE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jTextField28, javax.swing.GroupLayout.PREFERRED_SIZE, 94, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGroup(jPanel2Layout.createSequentialGroup()
.addComponent(jLabel28)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jTextField26))))))
.addGroup(jPanel2Layout.createSequentialGroup()
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
.addComponent(jTextField31, javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jTextField29, javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jTextField27, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.DEFAULT_SIZE, 105, Short.MAX_VALUE))
.addGap(21, 21, 21)
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel30)
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addGroup(javax.swing.GroupLayout.Alignment.LEADING, jPanel2Layout.createSequentialGroup()
.addComponent(jLabel34)
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel2Layout.createSequentialGroup()
.addGap(14, 14, 14)
.addComponent(jTextField34, javax.swing.GroupLayout.DEFAULT_SIZE, 195, Short.MAX_VALUE))
.addGroup(jPanel2Layout.createSequentialGroup()
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jTextField32, javax.swing.GroupLayout.PREFERRED_SIZE, 109, javax.swing.GroupLayout.PREFERRED_SIZE))))
.addGroup(javax.swing.GroupLayout.Alignment.LEADING, jPanel2Layout.createSequentialGroup()
.addComponent(jLabel32)
.addGap(20, 20, 20)
.addComponent(jTextField30, javax.swing.GroupLayout.PREFERRED_SIZE, 95, javax.swing.GroupLayout.PREFERRED_SIZE)))))
.addGroup(jPanel2Layout.createSequentialGroup()
.addComponent(jTextField33, javax.swing.GroupLayout.PREFERRED_SIZE, 123, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(27, 27, 27)
.addComponent(jLabel36)))
.addGap(113, 11I am not sure what is the driver for mysql. I just came across the similar kind of problem in the forum and I have given the forum link below. Check if you have the file and then set the classpath.
[Hyperlinks] http://forum.java.sun.com/thread.jspa?threadID=522873&messageID=2503366
[HyperLinks]
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