Set classpath for plugin

Hi Javafolks,
I need to be able to set the classpath used by the Java 1.4 Plugin by some means. I think it defaults to 'C:\Program Files\Java\jre\1.4\Classes' and I don't know how to change or add to this setting. Has anyone else come across this and solved it?
Cheers.

Does the plugin work differently from the regular jre jvm?
Have you added the classpath to OS's environment variables and tested it? (if using windows, go to System properties->advanced->environmentvariables and add/modify it to the system variables)

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How to set Classpath for MySQL

Hi
I want to connect to my mySQL db with a java program , but I don't know how to install the mySQL connector driver. Can anyone help me? or indicate somewhere where I might find the answer?
And how to set Classpath for MySQL.
my program gives an exception ClassNotFound.
Exception :com.mysql.jdbc.Driver
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:268)
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:164)
at Files.main(Files.java:352)
Plz help me
Thanx
Lalit

to make your life easy i tried to connect..
what you have to do is.. you mysql database server should be running
next you have to download one of the version of mysql driver.. i downloaded mysql-connector-java-5.0.5
go to my computer right click - >advance tab -> click on environment variable -> put you path e.g. C:\Program Files\Java\jarFiles\mysql-connector-java-5.0.5\mysql-connector-java-5.0.5-bin.jar
into your classpath in a user variable section..
Try this code
import java.sql.*;
public class MySqlConnect{
     public static void main(String [] args){
          try{
               Class.forName("com.mysql.jdbc.Driver");
               String url ="jdbc:mysql://localhost:3306/test";
               Connection con =DriverManager.getConnection(url,"root", "password");
               System.out.println("Connection: " + con);
          }catch(ClassNotFoundException cnfe){
               cnfe.printStackTrace();
          }catch(SQLException se){
               se.printStackTrace();
}have fun
Gurnah

Can I set classpath for OAS 10g?

Hi, 
 
I have OAS on my workstation. Here are the details. 
Server : Oracle Application Server 10g Release 3 
Version : 10.1.3.1.0 SOA4 
Build : 061008.0900.00025 
Platform : Windows XP - SP2 
 
I want to set an explicit classpath for complete OAS 10g as such and not to an individual oc4j application. Will I be able to do it? 
I saw the System Properties after my server started. 
It has a name-value pair as "java.class.path oc4j.jar". 
So, I assume all my classpath settings (done thru Environment Variables from My Computer) are lost.? I want to set it explicitly during the server startup itself. Can I do that? 
I tried setting below in the opmn.xml 
<process-set id="ASG" numprocs="1"> 
<module-data> <category id="start-parameters"> <data id="start-executable" value="C:\Oracle\product\10.1.3.1\OracleAS_1\jdk\bin\java"/> <data id="start-args" value="-classpath C:\abc\properties\"/> 
I appended my properties folder after all the jar files present in that tag. 
But its not loading any of my properties files. 
 
Can someone please help me out. 
 
Regards, 
 
Prashanth Babu.

No, the iPad does not support multiple user accounts or preferences.

Starting tomcat server after setting classpath for java

Sorry if this is nothing to do with java, it is more to do with starting tomcat server.
Tomcat server has been working totally fine, but when I wanted to compile a java servlet I wrote for it, I needed to run a BAT file called gojava in MS-DOS that had the classpath for java to work properly. I then attempted to run Tomcat, but just got 'bad command'. As long as I don't start up java by setting the classpath, tomcat will work, but as I need java to write servlets and then to test them without restarting my PC each time, how do I get tomcat to work?
Thanks
Hannah

Sounds like your batch file is changing your path, not your classpath. If you're getting "Bad command or filename" when attempting to run Tomcat, it can't find the executable. Check out the .bat file and see what it's doing (maybe even post it here for further clarity). If it's changing your path at all, make sure it includes a %path% to indicate that it simply wants to append items to the path, not overwrite it completely. Sorry if i'm way off base with my suggestions, but it sounds like that's where the problem's going to be, especially if rebooting resolves the problem.

How to set classpath for J2ME

how to set class path for j2me. I downloaded J2ME Wireless tool kit. And set the classpath "set classpath=c:\J2mewtk\lib\midpapi.zip;.;". but i could compile java file. .how to set.
With regards
Santhosh

When you are downloading j2MEWTK, everything is included within it. You dont require MIDP seperately. When you are runnung the ktoolbar , which is provided with J2mewtk, the preverifier runs and creates the required jad file for you. You dont need a forte to run these.
If you want to download MIDP seperately, that also is possible. Then you have to go for command line arguments. Please refer to Sun's MIDP page for details.
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Set classpath for java in fedora core 1?

i am new to programming java on linux and im having trouble finding out how to set classpath in the shell, permenently. i have the sdk installed and tried the usual "hello world" test and failed. the response i would get a message telling me javac is not a bash command. i have no clue how to set classpaths in linux so i would much appreciate it if someone would show me thanks

Ok, there is two ways to achieve this. Either by setting it globally for all the user, or only for your self. If you are working on your own station and have super user access, you can set it up for all th eusers, if not, just set it for your self. How ??
for all the users, modify the file /etc/profile and include this:
PATH=$PATH:/path/to/jdk/bin:.
CLASSPATH=$CLASSPATH:/path/to/jdk/lib/tools.jar:/path/to/jdk/lib/rt.jar
export PATH CLASSPATH
If you want to add it only for ur self then, modify the lsame line in ~/.bash_profile
hope this helps

How to set classpath for classes in war files

Hi All,
After deploying the WAR file I could access the JSP files but gives classnotfound exception when the information is expected from the java servlet.DO I need to set the classpath if yes how to do for the war file.
thanks

The web.xml,file structure and error is below let me know if more information is required.
As you said weblogic is looking for the classes in lib directory inspite of having the classes in web-inf/classes directory.
web-app>
<servlet>
<servlet-name>ControllerServlet</servlet-name>
<servlet-class>com.test.site.pds.Controller</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>ControllerServlet</servlet-name>
<url-pattern>/controller</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
</welcome-file-list>
</web-app>
File Structure:
C:\test\PDSWebApp\WEB-INF\classes\com\test\site\pds\*.class
PDSWebApp
 css
 html
 images
 javascript
 jsp
 WEB-INF
 classes
 com/test/site/pds/*.java
 lib
 servlets
The error:
javax.servlet.ServletException: [HTTP:101249][ServletContext(id=18129862,name=PdsApp,context-path=/PdsApp)]: Servlet class com.test.site.pds.Controller for servlet ControllerServlet could not be loaded because the requested class was not found in the classpath C:\bea\user_projects\domains\mydomain\myserver\.wlnotdelete\extract\myserver_PDSAPP_PdsApp\PdsApp.war;C:\bea\user_projects\domains\mydomain\.\myserver\.wlnotdelete\extract\myserver_PDSAPP_PdsApp\jarfiles\WEB-INF\lib\classes12.jar;C:\bea\user_projects\domains\mydomain\.\myserver\.wlnotdelete\extract\myserver_PDSAPP_PdsApp\jarfiles\WEB-INF\lib\commons-beanutils.jar;C:\bea\user_projects\domains\mydomain\.\myserver\.wlnotdelete\extract\myserver_PDSAPP_PdsApp\jarfiles\WEB-INF\lib\commons-collections-2.1.1.jar;C:\bea\user_projects\domains\mydomain\.\myserver\.wlnotdelete\extract\myserver_PDSAPP_PdsApp\jarfiles\WEB-INF\lib\commons-lang-2.0.jar;C:\bea\user_projects\domains\mydomain\.\myserver\.wlnotdelete\extract\myserver_PDSAPP_PdsApp\jarfiles\WEB-INF\lib\displaytag-1.0.jar;C:\bea\user_projects\domains\mydomain\.\myserver\.wlnotdelete\extract\myserver_PDSAPP_PdsApp\jarfiles\WEB-INF\lib\jstl.jar;C:\bea\user_projects\domains\mydomain\.\myserver\.wlnotdelete\extract\myserver_PDSAPP_PdsApp\jarfiles\WEB-INF\lib\standard.jar;C:\bea\user_projects\domains\mydomain\.\myserver\.wlnotdelete\extract\myserver_PDSAPP_PdsApp\jarfiles\_wl_cls_gen.jar;C:\bea\user_projects\domains\mydomain\.\myserver\.wlnotdelete\extract\myserver_PDSAPP_PdsApp.
java.lang.ClassNotFoundException: com.test.site.pds.Controller.

Setting Classpath for java in UNIX machine

Hi
I need to work in JAVA in UNIX machine. But, I don't know how to set the classpath in the unix machine. If anyone knows, please let me know.

setenv CLASSPATH .:/homes/code:${CLASSPATH}
http://www.cise.ufl.edu/class/cop3530fa04/WinHowTo.htm

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"Application Error
Return
Error Message: JBO-30003: The application pool (App_ModLocal) failed to checkout an application module due to the following
exception:
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The JDBC for your database should be added to your client project.
In JDeveloper created a new 'named' library item and specify the JDBC jar files for your database.
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http://otn.oracle.com/products/jdev/howtos/bc4j/bc_pdb2walkthrough.html#edit
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Setting classpath for Xerces-2_4_0

Hi guys
This might have been answered before but I have tried locating the answer in the forum, no joy.
My problem is to do with the classpath. As you know, xerces-2_4_0 now comes with multiple jar files as oppose to xerces version 1 (only single jar file is used ie. xerces.jar).
I have included xercesImpl.jar under my classpath:
.;C:\java\ant-1.5.3\lib;C:\java\xerces-2_4_\xercesImpl.jar;C:\java\xerces-2_4_0\xercesSamples.jar
And also in my path:
C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;c:\java\j2sdk\j2sdk1.4.2
\bin;C:\java\ant-1.5.3\bin;C:\java\xerces-2_4_0\xercesImpl.jar;
However, when compiling any java classes that import the following package:
org.apache.xerces.parsers.DOMParser;
i get this error:
java.lang.NoClassDefFoundError: org/apache/xerces/framework/XMLParser
Little help please? Much appreciated.
Kevin

Run jar -tvf xercesImpl.jar and see if the org/apache/xerces/framework/XMLParser is found. I'll bet it isn't, however I'll bet org.apache.xerces.parsers.DOMParser is. You'll need to figure out which .jar file has the framework/XMLParser class and place it in your classpath.

Setting path for third party class files

I am using some third party classfiles in my JSPs for JDBC. When I use these files, in normal Java Programs everything is working fine ( I am setting the path by using the CLASSPATH environment variable).
I did not understandt how to set classpath for these files (com.informix.jdbc.*) for use in iplanet 6.0.
I have tried to keep this "com" folder in /usr/java/j2sdk1.4.3_01/lib folder, but, it is not still working. I tried to change the start-jvm file, but, I am still having problems.
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Hi,
I changed the jvm12.conf file, but, it did not work. I changed the JDK Runtime Classpath in the Global Settings tab of the Administration Server and restarted both the webserver and the administration server and it worked.
Thanks for your response.
--Murthy.

Setting classpath in Tomcat on AIX

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Can any one know how to set classpath for jsf application in tomcat on AIX.

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Problem in setting path and classpath for java in RedHat linux 9

Hi ,
i am not able to set the PATH and CLASSPATH for j2sdk1.4.2_06
I have tried with export PATH=$PATH:/usr/j2sdk1.4.2_06/bin
and export CLASSPATH=$CLASSPATH:/usr/j2sdk1.4.2_06/lib
in terminal
but i want to configure it as permenant way for the jre and jdk
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regards mihir...

type those in .bashrc ... save and exit
then at prompt, type 'source .bashrc'
this is the permanent solution ...
bhalo thakun

Can't set classpath or classloader for JavaCompiler!

I have a class that I load using my own class loader. I know the class is loaded because I can instantiate it using reflection.
Then, in my code I try to compile a source file which references (via import) the class I loaded, and I get a package does not exist error on the compile.
I have tried everything I could think of. Currently, I'm doing this (read the comments):
 StandardJavaFileManager fileManager = compiler.getStandardFileManager(null, null, null);
 // trying to force the filemanager to use my class loader when resolving class paths... doesn't ever get called
 // except when loading annotation processors, though!!!
 ForwardingJavaFileManager<JavaFileManager> ffm = new ForwardingJavaFileManager<JavaFileManager>(fileManager)
 @Override
 public ClassLoader getClassLoader(Location location)
 if (location == StandardLocation.CLASS_PATH)
 return serviceClassLoader;
 return super.getClassLoader(location);
 // This returns a list of File objects which were loaded in my class loader.
 // The File objects are created from the URL's I load in the class loader, and have the form:
 // "C:/Some/Path/To/File.jar"
 List<File> compileClassPath = serviceClassLoader.getClassPathFiles();
 // Adding the bin directory which contains the .class files of my app (in Eclipse)
 compileClassPath.add(new File("./bin"));
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 compileClassPath.add(new File("C:/Documents%20and%20Settings/David/workspace/CoreServices/bin/"));
fileManager.setLocation(StandardLocation.CLASS_PATH, compileClassPath);The output I'm seeing includes:
CentralLoggingService_CentralLogService_Listener.java:5: package com.dave.service.logging does not exist
import com.dave.service.logging.CentralLoggingService;
 ^
CentralLoggingService_CentralLogService_Listener.java:7: cannot find symbol
symbol: class CentralLogService
public class CentralLoggingService_CentralLogService_Listener implements MessageListener<CentralLogService>So, basically, I need to know how to either:
1) Set the class path for the JavaCompiler so that it will load classes that are required by the source being compiled, or...
2) Set the classloader the JavaCompiler uses to resolve those classes.
I've tried everything I could think of, even reading through the compiler source, and nothing has worked yet.
Can anyone help?!?

Hi,
I am not sure but the argument to new File() looks dubious to me.
You seem to be mixing URL and filename syntax.
What does this do?
class FileTest {
 public static void main(String[] args) {
 system.out.println(new File("C:/Documents%20and%20Settings/David/workspace/CoreServices/bin/").exists());
}if its false then that directory doesn't exist.
I would use backslashes (don't forget to escape them) and spaces, and no trailing path separator - like this
class FileTest {
 public static void main(String[] args) {
 system.out.println(new File("C:\\Documents and Settings\\David\\workspace\\CoreServices\\bin").exists());
}Play around with that till you can create a File object that exists and isDirectory().
When I have done this in the past, I have used the existing classpath to set the classpath for invoking the compiler. For example this snippet from the hickory project at [https://hickory.dev.java.net/source/browse/hickory/trunk/code/src/net/java/dev/hickory/testing/Compilation.java?rev=11&view=markup|https://hickory.dev.java.net/source/browse/hickory/trunk/code/src/net/java/dev/hickory/testing/Compilation.java?rev=11&view=markup]
List<String> optionList = new ArrayList<String>();
optionList.addAll(Arrays.asList("-classpath",System.getProperty("java.class.path")));
optionList.addAll(Arrays.asList(options));
JavaCompiler.CompilationTask task = compiler.getTask(out,jfm,diagnostics,optionList,null,jfos);An advantage of that technique is that you don't have the path hard coded in the program. Useful if someone else wants to run it.
In fact, you might find it useful to use the hickory testing package which provides an abstraction over the compiler API. See the javadoc starting here
[https://hickory.dev.java.net/nonav/apidocs/index.html?net/java/dev/hickory/testing/Compilation.html|https://hickory.dev.java.net/nonav/apidocs/index.html?net/java/dev/hickory/testing/Compilation.html]
Bruce

Set classpath for plugin

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