Java classes and MySql Files

Hello,
There is a way to distribute the Mysql db files with yout java application without need to install Mysql in the computer, like in access, you just copy the .mdb file with your java class and create a conection to it.
Thank You

No. If you want to do that you should just use Access. mySQL files will not work without the mySQL server.

Similar Messages

Java Class and JSP file

Hi everyone,
I build a class in java, and now i wanna use this class in my jsp file.
I put that class into web-inf/classes in Apache Tomcat, but don't work.... Anyone can help me?
Greetings!

Put the class with its package such as com.sun.ejb.MyClass
-- > /WEB-INF/classes/com/sun/ejb/MyClass.class
then use it
http://www.skillipedia.com

Using java class and variables declared in java file in jsp

hi everyone
i m trying to seperate business logic form web layer. i don't know i am doing in a right way or not.
i wanted to access my own java class and its variables in jsp.
for this i created java file like this
package ris;
import java.sql.*;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
public class NewClass{
 public static void main(String args[]){
 Connection con = null;
 ResultSet rs=null;
 Statement smt=null;
 try{
 Class.forName("com.mysql.jdbc.Driver").newInstance();
 con=DriverManager.getConnection("jdbc:mysql:///net","root", "anthony111");
 smt=con.createStatement();
 rs= smt.executeQuery("SELECT * FROM emp");
 while(rs.next()){
 String str = rs.getString("Name");
 }catch( Exception e){
 String msg="Exception:"+e.getMessage();
 }finally {
 try {
 if(con != null)
 con.close();
 } catch(SQLException e) {}
}next i created a jsp where i want to access String str defined in java class above.
<%--
 Document : fisrt
 Created on : Jul 25, 2009, 3:00:38 PM
 Author : REiSHI
--%>
<%@page import="ris.NewClass"%>
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
 "http://www.w3.org/TR/html4/loose.dtd">
<html>
 <head>
 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 <title>JSP Page</title>
 </head>
 <body>
 <h1><%=str%></h1>
 </body>
</html>I wanted to print the name field extracted from database by ResultSet.
but it gives error cannot find symbol str.
please help me to find right way to do this.
i am using netbeans ide.

Very bad approach
1) Think if your table contains more than one NAMEs then you will get only the last one with your code.
2) Your String is declared as local variable in the method.
3) You have not created any object of NewClass nor called the method in JSP page. Then who will call the method to run sql?
4) Your NewClass contains main method which will not work in web application, it's not standalone desktop application so remove main.
Better create an ArrayList and then call the method of NewClass and then store the data into ArrayList and return the ArrayList.
It should look like
{code:java}
package ris;
import java.sql.*;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
public class NewClass{
 public static ArrayList getNames(){
 Connection con = null;
 ResultSet rs=null;
 Statement smt=null;
 ArrayList nameList = new ArrayList();
 try{
 Class.forName("com.mysql.jdbc.Driver").newInstance();
 con=DriverManager.getConnection("jdbc:mysql:///net","root", "anthony111");
 smt=con.createStatement();
 rs= smt.executeQuery("SELECT * FROM emp");
 while(rs.next()){
 nameList.add(rs.getString("Name"));
 return nameList;
 }catch( Exception e){
 String msg="Exception:"+e.getMessage();
 </code><code class="jive-code jive-java">return nameList;</code><code class="jive-code jive-java">
 }finally {
 try {
 if(con != null)
 con.close();
 } catch(SQLException e) {}
 </code><code>return nameList;</code>
<code class="jive-code jive-java"> }

IMPDP to import JAVA CLASS and JAVA SOURCE from .DMP file

hi,
I have a schema X, In that schema some of the *"JAVA CLASS" and "JAVA SOURCE"* objects are missing ..
The procedures ,functions..etc objects were updated at X schema..
I have 1 dmp file of Y schema , containing the missing "JAVA CLASS" and "JAVA SOURCE" s.. Can I import the the same to the schema X using IMPDP
i tried using INCLUDE clause but it is not working
eg:
impdp john1/john1@me11g22 directory=datadump dumpfile=DEVF2WAR.DMP remap_schema=devf2war:john INCLUDE="JAVA CLASS","JAVA CLASS"but error..
ORA-39001: invalid argument value
ORA-39041: Filter "INCLUDE" either identifies all object types or no object types.regards,
jp

Hello,
You should type JAVA_CLASS and JAVA_SOURCE (use underscore instead of space).
impdp john1/john1@me11g22 directory=datadump dumpfile=DEVF2WAR.DMP remap_schema=devf2war:john INCLUDE="JAVA_CLASS","JAVA_CLASS"Best Regards,
Gokhan Atil
If this question is answered, please mark appropriate posts as correct/helpful and the thread as closed. Thanks

Only to import JAVA CLASS and JAVA SOURCE from .DMP file using IMPDP

hi,
I have a schema X, In that schema some of the *"JAVA CLASS" and "JAVA SOURCE"* objects are missing ..
The procedures ,functions..etc objects were updated at X schema..
I have 1 dmp file of Y schema , containing the missing "JAVA CLASS" and "JAVA SOURCE" s.. Can I import the the same to the schema X using IMPDP
i tried using INCLUDE clause but it is not working
eg:
impdp john1/john1@me11g22 directory=datadump dumpfile=DEVF2WAR.DMP remap_schema=devf2war:john INCLUDE="JAVA CLASS","JAVA CLASS"but error..
ORA-39001: invalid argument value
ORA-39041: Filter "INCLUDE" either identifies all object types or no object types.regards,
jp

Double post: IMPDP to import JAVA CLASS and JAVA SOURCE from .DMP file
Already replied.
Regards
Gokhan

Mapping java classes to XML files

Hi Friends !!
Please I need your help.
Does somebody out there know any framework or API that helps me to map Java classes to XML files.
Something like:
public class Test {
 public int x;
 public int y;
 public int sum(){}
}to something like:
<?xml version="1.0" encoding="UTF-8"?>
<class>
<className>Test</className>
bla
bla
bla
</class>
Any tips?
Thanks in advance
Cleverson

JAXB will create classes from an XML schema, SAX is a parser library and JAXP is a library of XML a bunch of XML tools.
I don't care for JAXB too much. I would skip it and go right to the JAX-RPC spec (WebServices).

Difference b/w Java Class and Bean class

hi,
can anybody please tell me the clear difference between ordinary java class and java Bean class. i know that bean is also a java class but i donno the exact difference between the both.
can anybody please do help me in understanding the concept behind the bean class.
Thank u in advance.
Regards,
Fazlina

While researching this question, I came across this answer by Kim Fowler. I think it explains it better than any other answer I have seen in the forum.
Many thanks Kim
Hi
Luckily in the java world the definition of components is a little
less severe than when using COM (I also have, and still occasionaly
do, worked in the COM world)
Firstly there are two definitions that need to be clarified and
separated: JavaBean and EnterpriseJavaBean (EJB)
EJB are the high end, enterprise level, support for distributed
component architectures. They are roughly equivalent to the use of MTS
components in the COM/ COM+ world. They can only run within an EJB
server and provide support, via the server, for functionality such as
object pooling, scalability, security, transactions etc. In order to
hook into this ability EJB have sets of interfaces that they are
required to support
JavaBeans are standard Java Classes that follow a set of rules:
a) Hava a public, no argument constructor
b) follow a naming patterns such that all accessor and modifier
functions begin with set/ get or is, e.g.
public void setAge( int x)
public int getAge()
The system can then use a mechanism known as 'reflection/
introspection' to determine the properties of a JavaBean, literally
interacting with the class file to find its method and constructor
signatures, in the example above the JavaBean would end with a single
property named 'age' and of type 'int' The system simply drops the
'set' 'get' or 'is' prefix, switches the first letter to lower case
and deduces the property type via the method definition.
Event support is handled in a similar manner, the system looks for
methods similar to
addFredListener(...)
addXXXListener
means the JavaBean supports Fred and XXX events, this information is
particularly useful for Visual builder tools
In addition there is the abiliity to define a "BeanInfo' class that
explicitly defines the above information giving the capability to hide
methods, change names etc. this can also be used in the case where you
cannot, for one reason or another, use the naming patterns.
Finally the JavaBean can optionally - though usually does - support
the Serializable interface to allow persistence of state.
As well as standard application programming, JavaBeans are regularly
used in the interaction between Servlets and JSP giving the java
developer the ability to ceate ojbect using standard java whilst the
JSP developer can potentially use JSP markup tags to interact in a
more property based mechanism. EJB are heaviliy used in Enterprise
application to allow the robust distribution of process
HTH.
Kim

Do we have INCLUDE=JAVA CLASS AND INCLUDE=JAVA SOURCE OPTION IN DATA PUMP

Hi All ,
Can any one please tell me ,
how to import only java class and java source from datapump export file.
Include=java class or include=java source is not working ..
Thanks in advance,
Sanjeev.

Duplicate post.
datapump include option.
Lock this thread

[svn:osmf:] 16580: Converted classes and project files to work in flex 3.5

Revision: 16580
Revision: 16580
Author:   [email protected]
Date:     2010-06-16 17:08:07 -0700 (Wed, 16 Jun 2010)
Log Message:
Converted classes and project files to work in flex 3.5
Modified Paths:
    osmf/branches/zeri-certification/Test_Apps/FlexUnit4/.actionScriptProperties
    osmf/branches/zeri-certification/Test_Apps/MediaTests/.actionScriptProperties
    osmf/branches/zeri-certification/Test_Apps/MediaTests/html-template/history/history.js
    osmf/branches/zeri-certification/Test_Apps/MediaTests/html-template/index.template.html
    osmf/branches/zeri-certification/Test_Apps/MediaTests/src/InstructionsForm.mxml
    osmf/branches/zeri-certification/Test_Apps/MediaTests/src/MediaTests.mxml
    osmf/branches/zeri-certification/Test_Apps/MediaTests/src/ZeriTests.mxml
    osmf/branches/zeri-certification/Test_Apps/Zeri_Custom_Player/.actionScriptProperties
    osmf/branches/zeri-certification/Test_Apps/Zeri_Custom_Player/html-template/history/histo ry.js
    osmf/branches/zeri-certification/Test_Apps/Zeri_Custom_Player/html-template/index.templat e.html
    osmf/branches/zeri-certification/Test_Apps/Zeri_Custom_Player/src/Zeri_Custom_Player.mxml
    osmf/branches/zeri-certification/Test_Apps/Zeri_Custom_Player/src/comps/LogBuffer.mxml
Added Paths:
    osmf/branches/zeri-certification/Test_Apps/MediaTests/html-template/AC_OETags.js
    osmf/branches/zeri-certification/Test_Apps/Zeri_Custom_Player/html-template/AC_OETags.js
Removed Paths:
    osmf/branches/zeri-certification/Test_Apps/MediaTests/html-template/swfobject.js
    osmf/branches/zeri-certification/Test_Apps/Zeri_Custom_Player/html-template/swfobject.js

Hi for anyone getting similar issues,
the solution is described in http://forums.adobe.com/message/3302944#3302944
This is not a bug.
Arnoud

Where to put common classes and jar files

hi,
i want to put some classes and jar files in a common folder so that it can be accessed by other applications is there any way doing that.In tomcat server they have common and shared directories once any classes are into that folder they are being accessed easily ,but i am having problems with sun one .
Regards
Ameem Sami

Did you find a solution for this? I'm having the same problem.
Thanks,
Tony

Call Java Class and Methods from ABAP

Hi
I install de JCo, But how i can call java class and methods from ABAP?. somebody has an example?
The tutorial say that's is possible, but don't explain how do that?
Thanks.
Angel G. Hurtado

If you need only simple java program, you do not need to install JCo. The following codes can call java class.
DATA: COMMAND TYPE STRING VALUE 'C:\j2sdk1.4.2_08\bin\java',
      DIR TYPE STRING VALUE D:\eclipse\workspace',
      PARAMETER TYPE STRING VALUE 'Helloworld'. "here the name of your java program
CALL METHOD CL_GUI_FRONTEND_SERVICES=>EXECUTE
   EXPORTING
     APPLICATION = COMMAND
     PARAMETER = PARAMETER
     DEFAULT_DIRECTORY = DIR
   MAXIMIZED =
     MINIMIZED = 'X'     "If you need the DOS window to be minimized
EXCEPTIONS
    CNTL_ERROR = 1
    ERROR_NO_GUI = 2
    BAD_PARAMETER = 3
    FILE_NOT_FOUND = 4
    PATH_NOT_FOUND = 5
    FILE_EXTENSION_UNKNOWN = 6
    ERROR_EXECUTE_FAILED = 7
    OTHERS = 8.
Tell me if it works.
Nuno.

Drop java class and java source

Hi,
When I query user_objects I get some java class and java source objects
select * from user_objects where object_type like 'JAVA %';
How do I drop these java source and java class objects from the database
I tried using the following command
drop java class /4a524d89_AutoTransliteratorPk
drop java source AutoTransliteratorPkg
But I get error ORA-29501: invalid or missing Java source, class, or resource name
Please someone help me in dropping these objects
thanks
saaz

was the java source all caps or was it exactly AutoTransliteratorPkg. If its exactly AutoTransliteratorPkg then try this
drop java source "AutoTransliteratorPkg"

Pass table rowtype between java class and PL/SQL package

I am a complete newbie when it comes to java itself but I've been asked to investigate the possibility of passing a rowtype datatype from a PL/SQL package to a java class and vice versa.
I have heard of oracle.sql.ArrayDescriptor as an option but this appears to address only SQL types that are defined outside of a package.
I'm talking about using, say, SCOTT.EMP%rowtype instead of a user-defined type. I'm thinking that a java array could be defined from the definition of a table in the database but I don't know what class would be appropriate.
Could someone provide a simple proof-of-concept example that shows how you could use a java array to pass data to a package that is expecting a table rowtype variable and conversely a java class that reads the rowtype returned into a java array?
Would oracle.jdbc.driver.OracleDatabaseMetaData be a way of doing this?
Thanks!

Kuassi:
 
Not at all. I didn't feel like you misled me at all. I'm grateful for your help. I think that maybe I failed to describe my problem adequately in the first place.
 
Perhaps I've also gotten stuck on the term ref cursor.
 At any rate, the people I'm gathering information for have further refined their requirement. We want to take a collection of data and send it to a procedure. It doesn't have to be a "ref cursor" or "%rowtype" per se, but something that is maintainable and workable from both ends.
 
For example, to use the old SCOTT/TIGER paradigm, let's suppose we have a website where you can indicate which employees work for a given department. The website allows us to fill in information for multiple employees at once. We want to use a servlet that gathers all the employees data and sends it on through to a PL/SQL package so that the data is validated and committed in the database. 
Perhaps the java servlet should handle the multiple employee records as an array? If so, how can a PL/SQL procedure be made to recognize that construct? 
I can accept that java cannot create a "ref cursor" type to send information to a package, but might this be possible via some other implementation?
 
Hopefully this is a little more clear. If not, please let me know and I'll try to inject more details as to what we are trying to accomplish.
 
Once again, thanks for your persistent replies and help.

Difference between Java class and JavaBean?

What is the difference between a Java class and a JavaBean?
A class has variables which hold state.
A class has methods which can do things (like change state).
And if I understand a JavaBean it is rather like a BIG class...
i.e.
A JavaBean has variables which hold state.
A JavaBean has methods which can do things (like change state).
So, what's the difference between the two?
And in case it helps...What is the crossover point between the two? Is there a minimalist type JavaBean which is the same as a class? What is the difference between Java beans and Enterprise Java Beans?
Thanks.

Introspection, as I understand it is a bunch of
methods which allows me to ask what a class can do
etc. right? So, if I implement a bunch of
introspection methods for my class then my class
becomes a JavaBean?Introspection allows a builder tool to discover a Bean's properties, methods, and events, either by:
Following design patterns when naming Bean features which the Introspector class examines for these design patterns to discover Bean features.
By explicitly providing the information with a related Bean Information class (which implements the BeanInfo interface).
I understand now they are completely different.
Thanks. Very clear.
I do not understand how they are completely different.
In fact I don't have a clue what the differences are
other than to quote what you have written. In your
own words, what is the difference? This is the "New
to Java Technology" forum ;-) and I'm new to these
things.In that case ejbs are way too advanced for you, so don't worry about it.

Help! How to read a .txt file into a Java class and make 2D array?

Hi guys,
Im a newbie with arrays, just started really using them.. please bear with me if I don't seem to understand much..
I have a .txt file that contains either a square or rectangle (random width and length).. How can I read each line into a Java class into a 2D array with rows and columns?

Example :
import javax.swing.*;
import java.util.ArrayList;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.File;
public class ReadInto2DArrayExample {
 public static void main(String[] args) {
 ArrayList array = new ArrayList();
 char [][] twoDimesionArray = null;
 try
 JFileChooser fileChooser = new JFileChooser();
 if (fileChooser.showOpenDialog(null) == JFileChooser.APPROVE_OPTION)
 File file = fileChooser.getSelectedFile();
 BufferedReader reader = new BufferedReader(new FileReader(file));
 String data;
 //Read from file
 while ((data = reader.readLine()) != null)
 //Convert data to char array and add into array
 array.add(data.toCharArray());
 reader.close();
 //Creating a 2D char array base on the array size
 twoDimesionArray = new char [array.size()][];
 //Convert array from ArrayList to 2D array
 for (int i = 0; i < array.size(); i++)
 twoDimesionArray[i] = (char [])array.get(i);
 //Test the 2D Array
 for (int y = 0; y < twoDimesionArray.length; y++)
 char [] temp = twoDimesionArray[y];
 for (int x = 0; x < temp.length; x ++ )
 System.out.print(temp[x]);
 System.out.println("");
 catch (Exception ex)
 ex.printStackTrace();
}

Java classes and MySql Files

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