Bug 114492 [WorkingSets] working sets: edit dialog should not display an error on open
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/workingsets/JavaWorkingSetPage.java
final private static String PAGE_TITLE= WorkingSetMessages.JavaWorkingSetPage_title; 
	final private static String PAGE_ID= "javaWorkingSetPage"; 
	
	private Text fWorkingSetName;
	private CheckboxTreeViewer fTree;
	private ITreeContentProvider fTreeContentProvider;
	
	private boolean fFirstCheck;
	private IWorkingSet fWorkingSet;
	/**
	 * Default constructor.
	 */
	public JavaWorkingSetPage() {
		super(PAGE_ID, PAGE_TITLE, JavaPluginImages.DESC_WIZBAN_JAVA_WORKINGSET);
		setDescription(WorkingSetMessages.JavaWorkingSetPage_workingSet_description); 
		fFirstCheck= true;
	}
	/*
	 * @see org.eclipse.jface.dialogs.IDialogPage#createControl(org.eclipse.swt.widgets.Composite)
	 */
	public void createControl(Composite parent) {