Bug 20662 add .jar file to java build path from context menu in navigator [build path]
I'd like to be able to add a jar file to the current project build path from the resource navigator, via the context menu. This is a lot simpler than going through the project properties. It feels more natural to me to right click and add the library.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/actions/GenerateActionGroup.java
* Creates a new <code>GenerateActionGroup</code>. The group 
	 * requires that the selection provided by the page's selection provider 
	 * is of type <code>org.eclipse.jface.viewers.IStructuredSelection</code>.
	 * 
	 * @param page the page that owns this action group
	 */
	public GenerateActionGroup(Page page) {
		this(page.getSite());
	}
	/**
	 * Creates a new <code>GenerateActionGroup</code>. The group 
	 * requires that the selection provided by the part's selection provider 
	 * is of type <code>org.eclipse.jface.viewers.IStructuredSelection</code>.
	 * 
	 * @param part the view part that owns this action group
	 */
	public GenerateActionGroup(IViewPart part) {
		this(part.getSite());
	}
	
	private GenerateActionGroup(IWorkbenchSite site) {
		fSite= site;
		ISelectionProvider provider= fSite.getSelectionProvider();
		ISelection selection= provider.getSelection();
		
		fOverrideMethods= new OverrideMethodsAction(site);
		fAddGetterSetter= new AddGetterSetterAction(site);
		fAddUnimplementedConstructors= new AddUnimplementedConstructorsAction(site);
		fAddJavaDocStub= new AddJavaDocStubAction(site);
		fAddBookmark= new AddBookmarkAction(site.getShell());