JDT Open Type Dialog programmatically

[chqu1012]

			SelectionDialog dialog = new OpenTypeSelectionDialog(new Shell(), true,
					PlatformUI.getWorkbench().getProgressService(), null, IJavaSearchConstants.TYPE);
			dialog.setTitle(JavaUIMessages.OpenTypeAction_dialogTitle);
			dialog.setMessage(JavaUIMessages.OpenTypeAction_dialogMessage);

			int result = dialog.open();
			if (result == SWT.OK) {
				for (Object obj : dialog.getResult()) {
					System.out.println(obj);
				}
			}