1 /* 2 * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 package com.greetings; 26 27 import java.awt.Dimension; 28 import java.awt.Toolkit; 29 import javax.swing.BorderFactory; 30 import javax.swing.JFrame; 31 import javax.swing.JLabel; 32 import javax.swing.JPanel; 33 34 public class HelloWorld { 35 36 private static void createAndShowGUI() { 37 //Create and set up the window. 38 JFrame frame = new JFrame("Hello World"); 39 frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 40 41 Dimension dim = Toolkit.getDefaultToolkit().getScreenSize(); 42 frame.setBounds(0, 0, dim.width/2, dim.height/2); 43 44 //Add the ubiquitous "Hello World" label. 45 JLabel label = new JLabel("Hello World"); 46 JPanel panel = new JPanel(); 47 panel.setBorder(BorderFactory.createEmptyBorder(30, 10, 30, 30)); 48 panel.add(label); 49 50 frame.getContentPane().add(panel); 51 52 //Display the window. 53 frame.setVisible(true); 54 } 55 56 public static void main(String[] args) { 57 //Schedule a job for the event-dispatching thread: 58 //creating and showing this application's GUI. 59 javax.swing.SwingUtilities.invokeLater(new Runnable() { 60 public void run() { 61 createAndShowGUI(); 62 } 63 }); 64 } 65 }