[news.eclipse.platform] Using JarWriter2

[muthukumaran_m@xxxxxxxxxxx (Muthukumaran)]

Hi,

I am new to Eclipse Plugin, i was trying to develop a plugin to add the 
selected java file to a jar file, following is the code

	public void run(IAction action) {
		Shell shell = 
PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell();
		MessageDialog.openInformation(
			shell,
			"TWE_Plugin Plug-in",
			"Twe Action was executed : " + getClass());
       
       IFile[] fileToexport = {file};
       
       JarPackageData description= new JarPackageData();
       IPath location= new Path("C:/temp/myjar.jar");
       description.setJarLocation(location);
       description.setSaveManifest(true);
       //description.setManifestMainClass(mainType);
       description.setElements(fileToexport);
       
       try
       {
         TweJarFileWriter jar = new TweJarFileWriter(description, shell);
         jar.createJar(file);
       }
       catch(Exception exp)
       {        
         System.out.println("Exp : " + exp);
         exp.printStackTrace();
       }
	}

public class TweJarFileWriter extends JarWriter2
{
 public TweJarFileWriter(JarPackageData jarPackage, Shell parent) throws 
CoreException
 {
   super(jarPackage, parent);
 }

 public void createJar(IFile file) {

   try
   {
       this.addFile(file, file.getFullPath(), new 
File(file.getFullPath().toOSString()));
   }
   catch(Exception exp)
   {
     System.out.println("Exp : " + exp);
     exp.printStackTrace();
   }
         
}  
 
}

When i run the pluing nothing is happening, kinldy tell me what is the 
issue in this code.

Thanks,
Muthu