Here you can find the source of warnUser(Component parent, String message)
public static void warnUser(Component parent, String message)
//package com.java2s; /*//w ww.j a v a 2 s . c o m * Xapp (pronounced Zap!), A automatic gui tool for Java. * Copyright (C) 2009 David Webber. All Rights Reserved. * * The contents of this file may be used under the terms of the GNU Lesser * General Public License Version 2.1 or later. * * Software distributed under the License is distributed on an "AS IS" basis, * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License * for the specific language governing rights and limitations under the * License. */ import javax.swing.*; import java.awt.*; public class Main { public static void warnUser(Component parent, String message) { JOptionPane.showMessageDialog(parent, message, "Warning", JOptionPane.WARNING_MESSAGE); } }