code: public static ProcessBuilder getProcessBuilder(String mainClass, List<URL> classPath, List<String> args) throws LauncherException
  	{
  		List<String> cmdList = new ArrayList<String>();
  		String[] cmdArray;
  		
  		cmdList.add(getJavaPath());
  		if(classPath != null && classPath.size() > 0)
  		{
  			cmdList.add("-cp");
  			cmdList.add(mkPath(classPath));
  		}
  		cmdList.add(mainClass);
  		if(args!=null && args.size()>0)
  			cmdList.addAll(args);
  		cmdArray = cmdList.toArray(new String[cmdList.size()]);
  		if(logger.isDebugEnabled())
  			logger.debug("cmdArray=" + Arrays.toString(cmdArray));
  		return new ProcessBuilder(cmdArray);
  	}
docs: Get a process loader for a JVM.
  @param mainClass Main class to run
  @param classPath List of urls to use for the new JVM's
  class path.
  @param args Additional command line parameters
  @return ProcessBuilder that has not been started.