Bug 13034 Cannot create a Source Folder in a new Java Project
build 20020404 If you try and create a Source Folder in a Java Project you have just created you get an error preventing you from hitting finish. STEPS 1) Create Java Project Foo 2) Open New->Source Folder 3) Enter Bar as the name - you will get "Cannot nest entry Bar inside entry Foo/Bar" 4) Create a folder Bar. 5) Add it as a source folder in the Properties Dialog for Foo. No problem.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/wizards/buildpaths/BuildPathsBlock.java
resource.delete(false, null);
		}
		if (resource instanceof IContainer) {
			IResource[] members= ((IContainer) resource).members();
			for (int i= 0; i < members.length; i++) {
				removeOldClassfiles(members[i]);
			}
		}
	}
	
	
		
	private IContainer chooseContainer() {
		Class[] acceptedClasses= new Class[] { IProject.class, IFolder.class };
		ISelectionStatusValidator validator= new TypedElementSelectionValidator(acceptedClasses, false);
		IProject[] allProjects= fWorkspaceRoot.getProjects();
		ArrayList rejectedElements= new ArrayList(allProjects.length);
		IProject currProject= fCurrJProject.getProject();
		for (int i= 0; i < allProjects.length; i++) {
			if (!allProjects[i].equals(currProject)) {
				rejectedElements.add(allProjects[i]);
			}
		}
		ViewerFilter filter= new TypedViewerFilter(acceptedClasses, rejectedElements.toArray());
		ILabelProvider lp= new WorkbenchLabelProvider();
		ITreeContentProvider cp= new WorkbenchContentProvider();
		IResource initSelection= null;
		if (fOutputLocationPath != null) {
			initSelection= fWorkspaceRoot.findMember(fOutputLocationPath);
		}