显示actionListener actionEvent setmMemoric和actionPerformed的jButton例子
Xn_warm
・5 分钟阅读
以下源代码来自Sun Microsystems,显示与显示和单击JButton
相关的各种事情,包括使用JButton
类,ActionListener
,ActionEvent
,setMnemonic
和actionPerformed
。
JButt、Accaction、ActListListar、ActEngEnter、StEnMeNeNIC、Java、Swing、JFrand、JPAND
/** * Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * -Redistribution of source code must retain the above copyright notice, this * list of conditions and the following disclaimer. * * -Redistribution in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * Neither the name of Sun Microsystems, Inc. or the names of contributors may * be used to endorse or promote products derived from this software without * specific prior written permission. * * This software is provided\"AS IS,\" without a warranty of any kind. ALL * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING * ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE * OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN MIDROSYSTEMS, INC. (\"SUN\") * AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE * AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS * DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR ANY LOST * REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, * INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY * OF LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, * EVEN IF SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. * * You acknowledge that this software is not designed, licensed or intended * for use in the design, construction, operation or maintenance of any * nuclear facility. */ // v 1.3 import java.awt.BorderLayout; import java.awt.Component; import java.awt.GridLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.KeyEvent; import javax.swing.BorderFactory; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JPanel; import javax.swing.UIManager; public class SwingApplication { private static String labelPrefix =\"Number of button clicks:\"; private int numClicks = 0; public Component createComponents() { final JLabel label = new JLabel(labelPrefix +\"0\"); JButton button = new JButton(\"I\'m a Swing button!\"); button.setMnemonic(KeyEvent.VK_I); button.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { numClicks++; label.setText(labelPrefix + numClicks); } }); label.setLabelFor(button); /** * An easy way to put space between a top-level container and its * contents is to put the contents in a JPanel that has an\"empty\" * border. */ JPanel pane = new JPanel(); pane.setBorder(BorderFactory.createEmptyBorder(30, //top 30, //left 10, //bottom 30) //right ); pane.setLayout(new GridLayout(0, 1)); pane.add(button); pane.add(label); return pane; } public static void main(String[] args) { try { UIManager.setLookAndFeel(UIManager .getCrossPlatformLookAndFeelClassName()); } catch (Exception e) { } //Create the top-level container and add contents to it. JFrame frame = new JFrame(\"SwingApplication\"); SwingApplication app = new SwingApplication(); Component contents = app.createComponents(); frame.getContentPane().add(contents, BorderLayout.CENTER); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.pack(); frame.setVisible(true); } }