java双线程倒计时代码 java线程实现倒计时

求JAVA 使用 Thread 和 Timer 类来做倒计时的程序代码

抱歉，之前没看到第二个条件，重新写了下。 在本机上可以正确运行。 import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.KeyEvent; import java.awt.event.KeyListener; import java.io.IOException; import java.util.Timer; import java.util.TimerTask; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JTextField; public class TimeThreadFrame extends JFrame{ // 定义组件 private JLabel lblTime; private JTextField txtInput; private JButton btnEnter; // 记录所要启动的程序 private Process runningProcess; // 构造方法 public TimeThreadFrame(){ // 设置窗体的相关属性 super("TimerThread"); this.setSize(300,200); this.setLayout(null); this.setLocation(100,50); this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); // 创建组件 this.lblTime = new JLabel("请输入倒计时时间"); this.lblTime.setBounds(30,20,200,30); this.txtInput = new JTextField(); this.txtInput.setBounds(30,70,100,30); this.btnEnter = new JButton("确定"); this.btnEnter.setBounds(150,70,70,30); this.runningProcess = null; // 给JTextField注册监听 this.txtInput.addKeyListener(new KeyListener(){ public void keyPressed(KeyEvent ke) { } public void keyReleased(KeyEvent ke) { } public void keyTyped(KeyEvent ke) { txtInput_KeyTyped(ke); } }); // 给JButton注册监听 this.btnEnter.addActionListener(new ActionListener(){ public void actionPerformed(ActionEvent ae){ btnEnter_ActionPerformed(ae); } }); // 将各组件添加到窗体上 add(lblTime); add(txtInput); add(btnEnter); // 显示窗体 this.setVisible(true); } // 输入时的事件处理，控制用户只能输入数字 public void txtInput_KeyTyped(KeyEvent ke){ if(ke.getKeyChar() '0' || ke.getKeyChar() '9'){ ke.setKeyChar('\0'); } } // 点击按钮时的事件处理，核心！ public void btnEnter_ActionPerformed(ActionEvent ae){ // 获得用户输入的倒计时时间 String strTime = this.txtInput.getText(); if(strTime.equals("")){ // 检测用户是否输入 this.lblTime.setText("您尚未输入，请输入！"); } else{ Integer time = Integer.parseInt(strTime); // 创建线程 TimeThread tt = new TimeThread(this.lblTime,time); tt.start(); // 创建Timer Timer timer = new Timer(); timer.schedule(new TimerTask(){ // 启动其他程序 public void run() { try { // 当程序不存在时，会进行创建；存在时直接调用。 runningProcess = Runtime.getRuntime().exec("D:\\Program Files\\Tencent\\QQDoctor\\QQDoctor.exe"); } catch (IOException e) { e.printStackTrace(); } } }, time * 1000); } } // 启动窗体 public static void main(String[] args){ TimeThreadFrame ttf = new TimeThreadFrame(); } } // 时间线程类 class TimeThread extends Thread{ private JLabel lblTime; private int time; // 构造方法传入，显示事件的JLabel和倒计时的时间。 public TimeThread(JLabel lblTime, int time){ this.lblTime = lblTime; this.time = time; } // run方法 public void run(){ while(time 0){ // 显示所剩时间 this.lblTime.setText("所剩时间：" + time); // 所剩时间减少 time--; try { this.sleep(1000); } catch (InterruptedException e) { e.printStackTrace(); } } } }

相关问答

Q1: 用java编写一个倒计时器代码。

import java.awt.BorderLayout;import java.awt.Container;import java.awt.Font;import java.awt.GridLayout;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import javax.swing.JButton;import javax.swing.JFrame;import javax.swing.JOptionPane;import javax.swing.JPanel;import javax.swing.JTextField;public class TimerDemo extends JFrame implements ActionListener { private static final long serialVersionUID = 201306211111L; private JTextField screen = new JTextField("0"); private JButton start = new JButton("开始"); private JButton reset = new JButton("重置"); private JPanel panel = new JPanel(); private boolean isRunning; private int time; private int timeBetween; public TimerDemo(int timeBetween) { super("计时器"); this.timeBetween = timeBetween; try { init(); } catch (Exception e) { e.printStackTrace(); } } public TimerDemo() { super("计时器"); this.timeBetween = 100; try { init(); } catch (Exception e) { e.printStackTrace(); } } private void init() { panel.setLayout(new GridLayout()); panel.add(start); panel.add(reset); start.addActionListener(this); reset.addActionListener(this); screen.setFont(new Font("幼圆", Font.BOLD, 60)); screen.setHorizontalAlignment(JTextField.CENTER); screen.setEditable(false); Container c = getContentPane(); c.setLayout(new BorderLayout()); c.add(panel, BorderLayout.SOUTH); c.add(screen, BorderLayout.CENTER); this.setSize(200, 150); this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); this.setResizable(false); this.setLocationRelativeTo(null); this.setVisible(true); } public static void main(String[] args) { new TimerDemo(1);// 设定 1ms/次 // new TimerDemo(); } @Override public void actionPerformed(ActionEvent e) { if (e.getSource() == start) { if (start.getText().equals("开始")) { start.setText("暂停"); isRunning = true; } else if (start.getText().equals("暂停")) { start.setText("开始"); isRunning = false; } } if (e.getSource() == reset) { start.setText("开始"); screen.setText("0"); isRunning = false; time = 0; } new Thread(new TimeZone()).start(); } class TimeZone implements Runnable { @Override public void run() { while (isRunning) { time++; if (time = Integer.MAX_VALUE) { screen.setText("ERROR"); JOptionPane.showMessageDialog(null, "ERROR"); isRunning = false; } screen.setText(String.valueOf(time)); try { Thread.sleep(timeBetween); } catch (Exception e) { e.printStackTrace(); } } } }}

Q2: java中创建2个线程,并重命名线程的名字,分别倒计时10-1和100-90,每个数字延迟

//两个线程

Thread thread1 = new Thread()

{

@Override

public void run() {

// TODO Auto-generated method stub

super.run();

//从10 - 1

for(int  i = 10 ; i =1 ; i --)

{

System.out.println("Thread 10 - 1 ： " + i);

}

}

};

Thread thread2 = new Thread()

{

@Override

public void run() {

// TODO Auto-generated method stub

super.run();

//从100 - 90

for(int  i = 100 ; i =90 ; i --)

{

System.out.println("Thread 100 - 90 ： " + i);

}

}

};

//开始线程

thread1.start();

thread2.start();

Q3: java 中 倒计时 一分钟 怎么写？

代码如下:

public class TimeCountDown {

public static void countDown(int seconds) {

System.err.println("倒计时" + seconds + "秒,倒计时开始:");

int i = seconds;

while (i 0) {

System.err.println(i);

try {

Thread.sleep(1000);

} catch (InterruptedException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

i--;

}

System.err.println(i);

System.err.println("倒计时结束");

}

/**

* @param args

*/

public static void main(String[] args) {

// TODO Auto-generated method stub

countDown(60);// 倒计时1分钟

}

}

java双线程倒计时代码的介绍就聊到这里吧，感谢你花时间阅读本站内容，更多关于java线程实现倒计时、java双线程倒计时代码的信息别忘了在本站进行查找喔。