How to use DriverManager.getDriver()

Hi experts,
I tried to run a JDBC program from home to access the database in remote side. The remote JDBC is running Oracle8i and I tried to use DriverManager.getDriver() to find the suitable driver, but it returns me that I do not have a suitable jdbc driver to connect to my orcale server. Can you guys tell me how to do this?
Many Thanks, Kenny

You read the tutorial on how JDBC works.
http://java.sun.com/j2se/1.4.1/docs/guide/jdbc/index.html
And then you go get a driver from the Oracle site.

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How to use two different database Drivers in one application ????

I want to select datas in a result set of a query on a ms access database table and insert these into a mysql table of a mysql database in one application.
Now my problem is that only on database driver is acceptet in the same application even it`s instanciatet in a completely different class !!!
Here's the structure of my program:
class one:
String database = "jdbc:odbc:Driver={Microsoft Access Driver (*.mdb)};DBQ=";
database += filename.trim() + ";DriverID=22;READONLY=false}";
java.sql.Driver driver0=new sun.jdbc.odbc.JdbcOdbcDriver();
DriverManager.registerDriver(driver0);
DriverManager.getDriver(database);
con2=DriverManager.getConnection(database,"","");
DatabaseMetaData dmd2;
dmd2=con2.getMetaData();
stmt2=con2.createStatement();
rs2=("SELECT (.........
until here all values can be selected correctly from ms access
class2.get_gas_id(fla_gas);
Now I want to insert these values into mysql.
By despair i created a second class with another jdbc-method:
class2:
public class gas_select{
public static int fla_gas_id;
public static void get_gas_id(String fla_gas)
java.sql.Statement stmt3;
java.sql.Connection con3;
java.sql.ResultSet rs3;
FileWriter fout1;
try
java.sql.Driver driver1=new org.gjt.mm.mysql.Driver();
DriverManager.registerDriver(driver1);
DriverManager.getDriver(config.db_rge_stoffe); ==>
config.rge_stoffe="jdbc:mysql://192.168.10.101:3306/rge_stoffe?user=<user>";
con3=DriverManager.getConnection(config.db_rge_stoffe);
java.sql.DatabaseMetaData dmd3;
dmd3=con3.getMetaData();
stmt3=con3.createStatement();
rs3=stmt3.executeQuery("SELECT (Nr) from tblgaseliste where Gasart like "+"\'"+fla_gas+"\'");
while(rs3.next())
fla_gas_id=rs3.getInt("Nr");
fout1.write(fla_gas_id);
stmt3.close();
con3.close();
fout1.close();
There's no result and no error message. Idon't know what to do !
Has anyone an idea ???
Edited by: goberger on Mar 27, 2008 3:35 PM

Hi!
If I understand your problem correctly, you can create connections to as many databases as you want in one class. In one of my programs I have connection to 3 separate databases, but here is an example:
Connection mysql_con = DriverManager.getConnection("jdbc:mysql://localhost:3306/dbmysql", "root", "12345");
Connection pg_con = DriverManager.getConnection("jdbc:postgresql://127.0.0.1:5433/dbpgsql", "postgres", "12345");Then from mysql_con and pg_con create PreparedStatement or Statement then load selections into ResultSet and then use getString() to get a basic String type result that you want and so update table from each database.
HTH
Victor.
BTW Here I use port 5433 for PostgreSQL connection because I SSH tunnel it from 5432 to 5433
Edited by: vic_sk on Mar 27, 2008 4:23 PM

How to use "scope " attrubute in useBean tag

Can anyone please tell me if I can use the same JavaBean Class to hold information form different pages? well, let me explain exactely what I want to do:
I have a Java bean Class that holds a property 'Name':
package ContactManager;
public class Person {
private String name="%";
public String getName () {
return this.name;
public void setName (String my_name) {
name = my_name + "%" ;
I'm using this class to store temporarly the Criteria of search from a JSP/HTML page to send to a database for search and for UPDATE -> this of course is done in different HTML/JSP pages. The problem I have is that the first time I set the properties (when the user make a search) this value remains unchanged [-> the second time when the user asks for update, I try to use the same bean to keep the value => unfortuntly it returns me the old value]
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Pleaze help, I'm stuck.... Bellow is the 4 JSP pages for:
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- request_modify.jsp/ DoModify.jsp
1 -person_search.jsp
<%@ page import="java.sql.*" %>
<HTML>
<HEAD><TITLE>Person Search</TITLE></HEAD>
<BODY><CENTER>
<form method="POST" action="person_result.jsp">
Name <input type="text" name="name" size="47"></p>
<input type="submit" value="Submit" name="B1">
<input type="reset" value="Reset" name="B2"></p>
</form></body>
</html>
2- person_result.jsp
<%@ page import="java.sql.*" %>
<HTML><BODY>
<jsp:useBean id="theBean" class="ContactManager.Person"/>
<jsp:setProperty name="theBean" property="*" />
Name<BR>
<%
try {
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
System.out.println("JDBC driver loaded");
catch (ClassNotFoundException e) {
System.out.println(e.toString());
%>
<%
try {
Connection con = DriverManager.getConnection("jdbc:odbc:ContactManager");
Statement s = con.createStatement();
String sql = "SELECT Client.ClientID, Client.Name FROM Client where Client.Name like " + "'" + theBean.getName() + "'";
ResultSet rs = s.executeQuery(sql);
while (rs.next()) {
String myId = rs.getString(1);
%>
<TR>
<TD><%= myId %></TD>
<TD><a href="person_detail.jsp?id=<%= myId %>"><%=rs.getString(2)%></a></TD>
<TD><a href="delete_person.jsp?id=<%= myId %>">Delete</a></TD><BR>
</TR>
<%
rs.close();
s.close();
con.close();
catch (SQLException e) {
System.out.println(e.toString());
catch (Exception e) {
System.out.println(e.toString());
%>
</BODY>
</HTML>
3- request_modify.jsp
<%@ page import="java.sql.*" %>
<html>
<head><title>AddressBook: Modifying Person <%= request.getParameter ("id") %></title> </head>
<body bgcolor="#ffffee">
<%
try {
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
System.out.println("JDBC driver loaded");
catch (ClassNotFoundException e) {
System.out.println(e.toString());
%>
<%
int rowsAffected = 0;
try {
Connection con = DriverManager.getConnection("jdbc:odbc:ContactManager");
Statement s = con.createStatement();
String sql = "SELECT Client.ClientID, Client.Name FROM Client where ClientID ="+ request.getParameter("id");
ResultSet rs = s.executeQuery(sql);
if (rs.next()) {
%>
Client Name is <input type=text name=name value=<%= rs.getString(2) %>> <br>
<TD><a href="person_do_modify.jsp?id=<%= rs.getString(1)%>">Confirm Modify</a></TD>
<%
rs.close();
s.close();
con.close();
catch (SQLException e) {
System.out.println(e.toString());
catch (Exception e) {
System.out.println(e.toString());
%>
</BODY> </HTML>
4- do_modify.jsp
<%@ page import="java.sql.*" %>
<html>
<head><title>AddressBook: Modifying Address <%= request.getParameter ("id") %></title></head>
<body bgcolor="#ffffee">
<jsp:useBean id="theBean" class="ContactManager.Person" scope="page"/>
<jsp:setProperty name="theBean" property="name"/>
<%
try {
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
System.out.println("JDBC driver loaded");
catch (ClassNotFoundException e) {
System.out.println(e.toString());
%>
<%
int rowsAffected = 0;
try {
Connection con = DriverManager.getConnection("jdbc:odbc:ContactManager");
PreparedStatement preparedStatement = con.prepareStatement ("UPDATE Client SET Name=? WHERE ClientID =?");
preparedStatement.setString (1, theBean.getName());
preparedStatement.setString (2, request.getParameter("id"));
rowsAffected = preparedStatement.executeUpdate ();
preparedStatement.close ();
if (rowsAffected == 1) {
%>
done
<%
else{
%>
Not Modified
<%
con.close();
catch (SQLException e) {
System.out.println(e.toString());
catch (Exception e) {
%>
</BODY></HTML>
Thank you for the help.
Sammy

While a quick search on the <jsp:useBean> tag and the scope attribute will probably yield more information than I can summarize in a few sentences, I'm pretty sure that using the scope="page" attribute on a bean will cause that bean to be instantiated every time the page is loaded. In order for a bean to persist longer than the existance of that page (whether you're loading a new page, or reloading the same one), you'd need to set the scope to session or application (you'd probably want session).

How to use count sql statement?

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<%
String tot = (String)session.getAttribute("total");
int total = Integer.parseInt(tot);
Class.forName("org.postgresql.Driver");
// create connection url
String URL2 = "jdbc:postgresql://dbhost/ug59sxn";
// pass database parameters to JDBC driver
Connection Conn2 = DriverManager.getConnection(URL2, "ug59sxn", "hupeswop");
// query statement
Statement SQLStatement2 = Conn2.createStatement();
// generate query
String Query2 = "SELECT COUNT(*) FROM userteam WHERE total > '"+total+"'";
// get result code
ResultSet SQLResult2 = SQLStatement2.executeQuery(Query2);
int position = (int)SQLResult2 + 1;
%>
<TD valign=top>
<P align=center><FONT size=+1>Welcome <%= session.getAttribute("fName") %> <%= session.getAttribute("surname") %><BR>
Your Team, <%= session.getAttribute("teamname") %>, are currently lying in position <FONT color=red><% out.println(position) %></font>, with <FONT color=red><%= session.getAttribute("total") %></font> points.<BR>
</FONT></P>
<P align=justify> Use the shorcuts on the left to visit different sections of the game.
You can change your squad around to prepare for forthcoming games (fixtures can be found in the statistics section),
transfer a player in to your squad to add some depth or replace injured members, or perhaps browse the statistics section to see how your team is doing in the FFL table.</P>
<HR>
<%
SQLResult2.close();
SQLStatement2.close();
Conn2.close();
%>
i get the following errors:
type Exception report
message Internal Server Error
description The server encountered an internal error (Internal Server Error) that prevented it from fulfilling this request.
exception
org.apache.jasper.JasperException: Unable to compile class for JSPNote: sun.tools.javac.Main has been deprecated.
An error occured between lines: 62 and 84 in the jsp file: /main2.jsp
Generated servlet error:
/home/students/ug/ug59sxn/servlets-local/work/localhost/myapp/main2$jsp.java:80: Invalid cast from java.sql.ResultSet to int.
int position = (int)SQLResult2 + 1;
^
An error occurred at line: 88 in the jsp file: /main2.jsp
Generated servlet error:
/home/students/ug/ug59sxn/servlets-local/work/localhost/myapp/main2$jsp.java:108: Invalid type expression.
out.println(position)
^
An error occurred at line: 88 in the jsp file: /main2.jsp
Generated servlet error:
/home/students/ug/ug59sxn/servlets-local/work/localhost/myapp/main2$jsp.java:111: Invalid declaration.
out.write("</font>, with <FONT color=red>");
^
3 errors, 1 warning
if anyone can help me out, please do so..thanx in advance...

You cannot cast a ResultSet object (or any other object for that matter) to a primitive (such as an int)
Replace the following line of code:
int position = (int)SQLResult2 + 1;with this:
int position = 0;
if(SQLResult2.next())
position = SQLResult2.getInt(1) + 1;
}Additionally I noticed that you have put single quotes around total in the following line:
String Query2 = "SELECT COUNT(*) FROM userteam WHERE total > '"+total+"'";Are you sure that the total column in the userteam table is of string type? If not, you don't need the single quotes.

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Hi,
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Regards,
laxmi.

Haii
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try{
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
conn=DriverManager.getConnection("jdbc:odbc:EmployeeManagerDB","sa","sa");
System.out.println("Get connection successfully!");
catch(Exception e){
System.out.println("Error: " +e);
return conn;
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thanks !

but now, with Java 6.0 . don't use
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Hi all
This problem can look funny to lot of you.
I have project where i use Java on server side to perform some operation with MySQL. I have created connection to MySQL but there will be lot of users and connecting to database like i have done is not a option.
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[http://www.netbeans.org/kb/60/web/mysql-webapp.html|http://www.netbeans.org/kb/60/web/mysql-webapp.html]
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I was checking lot of web pages and all was talking about how to create PooledConnection but nothing with example how to use PooledConnection created on server already.
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Hi!
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Thank you for your response, but the separation with commas or spaces
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I built a struts application .It is working well.Now I want use DAOand .How I use?
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They are
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import java.io.*;
import java.sql.*;
import javax.servlet.http.HttpServletRequest;
import org.apache.struts.action.ActionError;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionMessage;
public class GetNameForm extends org.apache.struts.action.ActionForm {
private String name="";
private String pass="";
public GetNameForm() {
// TODO: Write constructor body
public void reset(ActionMapping actionMapping, HttpServletRequest request) {
// TODO: Write method body
// throw new UnsupportedOperationException("Method not implemented");
this.name="";
this.pass="";
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try
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catch(Exception e)
try
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st=null;
rs=null;
con=DriverManager.getConnection("jdbc:odbc:MSACCESSDSN","","");
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String pass=getPass();
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try {
//use buffering
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BufferedReader input = null;
input = new BufferedReader( new FileReader(testFile) );
StringBuffer Contents=new StringBuffer();
String line=null;
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method.
1.What is important of DAO pls explain me with small codings.
2.How I use DAO in this coding?
[Note: I use Exadel StrutsStudio.]
Anyone have idea pls guide me.

Well in a DAO pattern you usually have one DAO class for each table in the database so there is for instance one PersonDAO and one ItemDAO which have their respective create, read, update and delete methods. Each DAO also hides its implementation through an interface defining the DAO methods, furthermore there's a DAO factory determining what class to load at runtime. My advice is to start out simple and not too abstract, try looking at the following example - it involves EJBs but explains the pattern.
http://www.informit.com/guides/printerfriendly.asp?g=java&seqNum=137&rl=1
Also keep in mind that implementing the DAO pattern using frameworks such as Spring simplifies the process, as illustrated here
http://www.java2s.com/Code/Java/Hibernate/SpringDaoDemo.htm
I hope that helps.

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well, i had the same problem some months ago, the READ ME OF HOW TO INSTALL IN THE ORACLE SITE IT IS INCORRECT!!! i cant remember it right, but the directory pertaining to the read me file is WRONG! im 100% sure because when i changed the directory to its correct path it WORKED!!! so u have to use common sense...
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also, dont unzip the file...
i hope this helps... i had my code in another computer so i can post it here...

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I will add the people in this project myself.
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_http://technet.microsoft.com/en-us/library/cc164331(v=exchg.65) .aspx

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Batch processing usually involves using actions you have recorded. In Action you can insert Path that can be used during processing documents. Path have some size so you may want to only process document that have the same size. Look in the Actions Palette fly-out menu for insert path. It inserts|records the current document work path into the action being worked on and when the action is played it inserts the path into the document as the current work path..

How to use airport time capsule with multiple computers?

I'm sure there are some thread about this but i couldn't find it... so sorry for that but hear me out! =)
I bought the AirPort Time Capsule to back up my MBP
And so i did.
then i thought "let give this one a fresh start" so i erased all of it with the disk utility and re-installed the MBP from the recovery disk.
I dont want all of the stuff i backed up just a few files and some pictures so i brought that back.. so far so good.
Now i want to do a new back up of my MBP so i open time machine settings, pick the drive on the time capsule and then "Choose" i wait for the beck up to begin, and then it fails. It says (sorry for my bad english, im swedish haha) "the mount /Volume/Data-1/StiflersMBP.sparsebundle is already in use for back up.
this is what i want:
i want the "StiflersMBP.sparsebundle" to just be so i can get some stuf when i need them. it's never to be erased.
i want to make a new back up of my MBP as if it's a second computer...
so guys and girls, what is the easiest and best solution?
Best regards!

TM does not work like that.
If you want files to use later.. do not use TM.
Or do not use TM to the same location. Plug a USB drive into the computer and use that as the target for the permanent backup.
Read some details of how TM works so you understand what it will do.
http://pondini.org/TM/Works.html
Use a clone or different software for a permanent backup.
http://pondini.org/TM/Clones.html
How to use TC
http://pondini.org/TM/Time_Capsule.html
This is helpful.. particularly Q3.
Why you don't want to use TM.
Q20 here. http://pondini.org/TM/FAQ.html

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