Bug 10593 Jar export should add ".jar" suffix if not specified
Build 20020228 - select some files - export them using the jar export - enter "test" as the jar name - it creates a jar file called "test" It should use "test.jar".
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/jarpackager/JarPackageWizardPage.java
dialog.setFileName(currentSourceString);
		String selectedFileName= dialog.open();
		if (selectedFileName != null) {
			IPath path= getPathFromString(selectedFileName);
			if (path.lastSegment().equals(getOutputSuffix()))
				selectedFileName= ""; 
			fDestinationNamesCombo.setText(selectedFileName);
		}
	}
	/**
	 * Returns the resource for the specified path.
	 *
	 * @param path	the path for which the resource should be returned
	 * @return the resource specified by the path or <code>null</code>
	 */
	protected IResource findResource(IPath path) {
		IWorkspace workspace= JavaPlugin.getWorkspace();
		IStatus result= workspace.validatePath(
							path.toString(),
							IResource.ROOT | IResource.PROJECT | IResource.FOLDER | IResource.FILE);
		if (result.isOK() && workspace.getRoot().exists(path))
			return workspace.getRoot().findMember(path);
		return null;
	}
	/**
	 * Creates the checkbox tree and list for selecting resources.
	 *
	 * @param parent the parent control
	 */
	protected void createInputGroup(Composite parent) {