Bug 23320 Incomplete classpath and circular classpath options should be surfaced
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/preferences/CompilerPreferencePage.java
fTextModifyListener= new ModifyListener() {
			public void modifyText(ModifyEvent e) {
				textChanged((Text) e.widget);
			}
		};
	}
	
	/**
	 * @see IWorkbenchPreferencePage#init(org.eclipse.ui.IWorkbench)
	 */	
	public void init(IWorkbench workbench) {
	}
	/**
	 * @see PreferencePage#createControl(Composite)
	 */
	public void createControl(Composite parent) {
		
		super.createControl(parent);
		WorkbenchHelp.setHelp(getControl(), IJavaHelpContextIds.COMPILER_PREFERENCE_PAGE);
	}	
	/**
	 * @see PreferencePage#createContents(Composite)
	 */
	protected Control createContents(Composite parent) {
		initializeDialogUnits(parent);
		
		TabFolder folder= new TabFolder(parent, SWT.NONE);
		folder.setLayout(new TabFolderLayout());	
		folder.setLayoutData(new GridData(GridData.FILL_BOTH));