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
fBuildPathDialogField.setText(outputLocation.makeRelative().toString());
		fClassPathList.setElements(newClassPath);
		fClassPathList.setCheckedElements(exportedEntries);
		if (fSourceContainerPage != null) {
			fSourceContainerPage.init(fCurrJProject);
			fProjectsPage.init(fCurrJProject);
			fLibrariesPage.init(fCurrJProject);
		}
		
		doStatusLineUpdate();
	}	
	
	
	
	/**
	 * Returns the Java project. Can return <code>null<code> if the page has not
	 * been initialized.
	 */
	public IJavaProject getJavaProject() {
		return fCurrJProject;
	}
	
	/**
	 * Returns the current output location. Note that the path returned must not be valid.
	 */	
	public IPath getOutputLocation() {
		return new Path(fBuildPathDialogField.getText()).makeAbsolute();
	}