Help needed regarding change of system CLASSPATH

Question

Hi All,
I need to change the system CLASSPATH using my java programe. I tried the following code but its not working though it returns the correct CLASSPATH, but unable to do the modification. All I need is to append a new jar file in the existing CLASSPATH..
code]
try{
          sysMap = System.getenv();
          }catch(Exception se1){
                    System.out.println("Exception in finding Environment properties");
          Set Keys = sysMap.keySet();
          Iterator It = Keys.iterator();
          while(It.hasNext()){
               String strNow =(String) It.next();
               if(strNow.contains("CLASSPATH")){
                    System.setProperty("CLASSPATH", ".;C:\\Calypso\\Software\\\\Release\\jars\\calypso.jar;C:\\Calypso\\Software\\Release\\build;C:\\Calypso\\Software\\Release\\build\\calypsofx;C:\\Calypso\\Software\\Release\\resources;C:\\Calypso\\Software\\Release;C:\\Calypso\\Software\\Release\\jars\\jconn2.jar;C:\\Calypso\\Software\\Release\\jars\\jaxb-1.0.4\\;C:\\Calypso\\Software\\Release\\jars\\javacup.jar;C:\\Calypso\\Software\\Release\\jars\\antlr.jar;C:\\Calypso\\Software\\Release\\jars\\ojdbc14.zip;C:\\Calypso\\Software\\Release\\jars\\web\\servlet.jar;C:\\Calypso\\Software\\Release\\jars\\web\\webserver.jar;C:\\Calypso\\Software\\Release\\jars\\ftp.jar;C:\\Calypso\\Software\\Release\\jars\\itext-1.02b.jar;C:\\Calypso\\Software\\Release\\jars\\Jama-1.0.1.jar;C:\\jdk1.5.0_10\\bin;C:\\Calypso\\Software\\Release\\webfx\\calypsoWebFXServer.jar;C:\\XXX.jar");
                    System.out.println("Classpath changed");
Any help will be appreciated.

Answer 1

Hi Kaj ,
Well I am in a situation where we need to extend a
existing system and we are providing the client with
a new jar file for every modification. Now all I need
is that our programe automatically add (infect
append) the jar file in the existing system
CLASSPATH, so that the client need not to add(append)
the new jar files all the time.
Can you provide any help??As others have said, use -cp as argument when you start your application. It's quite common that people write a script that adds all jars in a certain directory to the argument to -cp.
Kaj