Bug 72903 Add variable expansion for Test Class in JUnit launch configurations [JUnit]
org.eclipse.jdt.junit/src/org/eclipse/jdt/internal/junit/launcher/JUnitMainTab.java
gd= new GridData();
		gd.horizontalAlignment= GridData.FILL;
		gd.horizontalSpan= 2;
		fKeepRunning.setLayoutData(gd);
	}
	
	protected static Image createImage(String path) {
		try {
			ImageDescriptor id= ImageDescriptor.createFromURL(JUnitPlugin.makeIconFileURL(path));
			return id.createImage();
		} catch (MalformedURLException e) {
			
		}  
		return null;
	}
	/**
	 * @see ILaunchConfigurationTab#initializeFrom(ILaunchConfiguration)
	 */
	public void initializeFrom(ILaunchConfiguration config) {
		updateProjectFromConfig(config);
		String containerHandle= ""; 
		try {
			containerHandle = config.getAttribute(JUnitBaseLaunchConfiguration.LAUNCH_CONTAINER_ATTR, ""); 
		} catch (CoreException ce) {			
		}
		
		if (containerHandle.length() > 0)
			updateTestContainerFromConfig(config);
		else
			updateTestTypeFromConfig(config);