随机抽奖小程序_在线随机抽号小程序

package com.lzw;  
import java.awt.Font;  
import javax.swing.JTextField;  
import javax.swing.SwingConstants;  
//自定义的文本框组件  
public class NumField extends JTextField {  
    private static final Font numfont = new Font("", Font.BOLD, 48);//定义文本框使用的字体  
   public NumField() {  
        super();   //执行父类构造方法  
        setHorizontalAlignment(SwingConstants.CENTER);  //设置文本居中对齐  
        setFont(numfont);   //设置字体  
        setFocusable(false); //取消焦点  
    }  
} 

public class Lottery extends JFrame { private JTextField infoField; //抽奖号码确认文本框  private NumField[] numFields; //随机号码文本框数组  private RandomNum randomThread=new RandomNum(); public static void main(String args[]) { EventQueue.invokeLater(new Runnable() { public void run() { try { Lottery frame = new Lottery(); frame.setVisible(true); } catch (Exception e) { e.printStackTrace(); } } }); } //创建窗体界面的构造方法  public Lottery() { super(); final BorderLayout borderLayout_1 = new BorderLayout(); borderLayout_1.setVgap(10); getContentPane().setLayout(borderLayout_1); //设置布局管理器  setBounds(100, 100, 420, 256); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); final JPanel contentPanel = new JPanel(); //创建中间的内容面板  final BorderLayout borderLayout = new BorderLayout(); borderLayout.setVgap(10); borderLayout.setHgap(10); contentPanel.setLayout(borderLayout); //设置内容面板布局管理器  getContentPane().add(contentPanel); //添加内容面板到窗体  final JPanel numPanel = new JPanel(); //创建显示随机数的面板  contentPanel.add(numPanel); //添加随机数面板到内容面板  final GridLayout gridLayout = new GridLayout(1, 0); gridLayout.setHgap(10); numPanel.setLayout(gridLayout); //设置随机数面板布局管理器  numFields = new NumField[5]; //创建随机数文本框数组  for(int i=0;i<numFields.length;i++){ //初始化随机数文本框  numFields[i]=new NumField(); //初始化数组元素  numPanel.add(numFields[i]); //添加文本框到随机数面板   } final JPanel infoPanel = new JPanel(); //创建显示抽奖号码的面板  infoPanel.setLayout(new BorderLayout()); //设置面板布局管理器  contentPanel.add(infoPanel, BorderLayout.SOUTH); //添加面板到窗体  final JLabel label_1 = new JLabel(); //布局抽奖号码面板  label_1.setFont(new Font("", Font.BOLD, 20)); label_1.setText("随机抽奖的中将号码是："); infoPanel.add(label_1, BorderLayout.WEST); infoField = new JTextField(); infoPanel.add(infoField); final JLabel logoLabel = new JLabel(); //布局LOGO标签  logoLabel.setFont(new Font("隶书", Font.PLAIN, 72)); logoLabel.setHorizontalAlignment(SwingConstants.CENTER); getContentPane().add(logoLabel, BorderLayout.NORTH); logoLabel.setText("随机抽奖"); final JPanel controlPanel = new JPanel(); //创建控制按钮面板  final FlowLayout flowLayout = new FlowLayout(); flowLayout.setHgap(25); controlPanel.setLayout(flowLayout); //设置面板布局  getContentPane().add(controlPanel, BorderLayout.SOUTH); //添加面板到窗体底部  final JButton startButton = new JButton(); //创建开始按钮  startButton.addActionListener(new ActionListener() { //添加事件监听器  public void actionPerformed(final ActionEvent e) { do_startButton_actionPerformed(e); } }); startButton.setText("开始"); controlPanel.add(startButton); //添加按钮到面板  final JButton lotteryButton = new JButton(); //创建抽奖按钮  lotteryButton.addActionListener(new ActionListener() { //添加事件监听器  public void actionPerformed(final ActionEvent e) { do_lotteryButton_actionPerformed(e); } }); lotteryButton.setText("抽奖"); controlPanel.add(lotteryButton); final JButton exitButton = new JButton(); //创建退出按钮  exitButton.addActionListener(new ActionListener() { //添加事件监听器  public void actionPerformed(final ActionEvent e) { do_exitButton_actionPerformed(e); } }); exitButton.setText("退出"); controlPanel.add(exitButton); } // 生成随机数字的内部线程类  class RandomNum extends Thread { private boolean stop=false; //线程状态变量  public void run() { while (!stop) { for (final NumField nf : numFields) { try { Thread.sleep(1); } catch (InterruptedException e) { e.printStackTrace(); } final int num = (int) (Math.random() * 10); //生成随机数   EventQueue.invokeLater(new Runnable() { public void run() { nf.setText(num + ""); } }); } } } //停止线程的方法  public void stopLottery() { this.stop = true; } } // 开始按钮的事件处理方法  protected void do_startButton_actionPerformed(final ActionEvent e) { if(randomThread!=null) //如果存在上一个线程对象  randomThread.stopLottery(); //停止它  randomThread=new RandomNum(); //创建新的线程对象  randomThread.start(); //启动线程  } //抽奖按钮的事件处理方法  protected void do_lotteryButton_actionPerformed(final ActionEvent e) { if(randomThread!=null) //如果存在线程对象  randomThread.stopLottery(); //停止它  try { randomThread.join(); //等抽奖线程结束  } catch (InterruptedException e1) { e1.printStackTrace(); } EventQueue.invokeLater(new Runnable() { //在事件队列中更新抽奖信息  public void run() { String code = ""; //抽奖代码字符串  for (final NumField nf : numFields) { //遍历数字文本框  code += nf.getText(); //连接5个数字字符   } infoField.setText(code); //更新抽奖信息文本框   } }); } // 退出按钮的事件处理方法  protected void do_exitButton_actionPerformed(final ActionEvent e) { System.exit(0); //退出程序   } }