开发工具：JBuilder2005
package test;import javax.swing.*;/** * <p>Title: </p> * * <p>Description: </p> * * <p>Copyright: Copyright (c) 2006</p> * * <p>Company: </p> * * @author 我为J狂 * @version 1.0 */public class Move extends Thread{ JTextField jf; public Move(JTextField jf) { this.jf=jf; } boolean start=true; public void stopmove(){ start=false; } public void startmove(){ start=true; } synchronized void show(){ int random=(int)(Math.random()*10); jf.setText(String.valueOf(random)); } public void run(){ while(start){ show(); } }}package test;
import java.awt.*;
import javax.swing.*;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;
public class RandomFrame extends JFrame { JPanel contentPane; JTextField jTextField1 = new JTextField(); JButton jButton1 = new JButton(); Move move; boolean sign=true; public RandomFrame() { try { setDefaultCloseOperation(EXIT_ON_CLOSE); jbInit(); } catch (Exception exception) { exception.printStackTrace(); } }
/** * Component initialization. * * @throws java.lang.Exception */ private void jbInit() throws Exception { contentPane = (JPanel) getContentPane(); contentPane.setLayout(null); setSize(new Dimension(400, 300)); setTitle("产生随机数"); jTextField1.setFont(new java.awt.Font("Dialog", Font.BOLD, 55)); jTextField1.setHorizontalAlignment(SwingConstants.CENTER); jTextField1.setBounds(new Rectangle(113, 57, 153, 89)); jButton1.setBounds(new Rectangle(142, 184, 99, 25)); jButton1.setFont(new java.awt.Font("Dialog", Font.PLAIN, 12)); jButton1.setText("开始"); jButton1.addActionListener(new RandomFrame_jButton1_actionAdapter(this)); contentPane.add(jTextField1); contentPane.add(jButton1); move=new Move(jTextField1); move.start(); }
public void jButton1_actionPerformed(ActionEvent e) { if(sign) { jButton1.setText("开始"); move.stopmove(); sign=false; } else { jButton1.setText("停止"); sign=true; move=new Move(jTextField1); move.start(); } }}
class RandomFrame_jButton1_actionAdapter implements ActionListener { private RandomFrame adaptee; RandomFrame_jButton1_actionAdapter(RandomFrame adaptee) { this.adaptee = adaptee; }
public void actionPerformed(ActionEvent e) { adaptee.jButton1_actionPerformed(e); }}package test;
import java.awt.Toolkit;import javax.swing.SwingUtilities;import javax.swing.UIManager;import java.awt.Dimension;
public class RandomApp { boolean packFrame = false;
/** * Construct and show the application. */ public RandomApp() { RandomFrame frame = new RandomFrame(); // Validate frames that have preset sizes // Pack frames that have useful preferred size info, e.g. from their layout if (packFrame) { frame.pack(); } else { frame.validate(); }
// Center the window Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize(); Dimension frameSize = frame.getSize(); if (frameSize.height > screenSize.height) { frameSize.height = screenSize.height; } if (frameSize.width > screenSize.width) { frameSize.width = screenSize.width; } frame.setLocation((screenSize.width - frameSize.width) / 2, (screenSize.height - frameSize.height) / 2); frame.setVisible(true); }
/** * Application entry point. * * @param args String[] */ public static void main(String[] args) { SwingUtilities.invokeLater(new Runnable() { public void run() { try { UIManager.setLookAndFeel(UIManager. getSystemLookAndFeelClassName()); } catch (Exception exception) { exception.printStackTrace(); }
new RandomApp(); } }); }}
