Bug 27483 Early plugin activation of J9 launcher
1) empty workspace 2) switch to Java perspectiv ->the J9 launcher plugin is activated
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/JavaPlugin.java
return new Path(getDefault().getDescriptor().getInstallURL().getFile());
	}
	
	public static ImageDescriptorRegistry getImageDescriptorRegistry() {
		return getDefault().internalGetImageDescriptorRegistry();
	}
	
	public JavaPlugin(IPluginDescriptor descriptor) {
		super(descriptor);
		fgJavaPlugin= this;
	}
	
	/* (non - Javadoc)
	 * Method declared in Plugin
	 */
	public void startup() throws CoreException {
		super.startup();
		registerAdapters();
		try {
			JavaDocLocations.loadJavadocLocations();
		
			fVMInstallListener= new JavaDocVMInstallListener();
			fVMInstallListener.init();
		} catch (CoreException e) {
			log(e);
		}		
	}
		
	/* (non - Javadoc)
	 * Method declared in AbstractUIPlugin