求JAVA 使用 Thread 和 Timer 類來做倒計(jì)時(shí)的程序代碼

抱歉，之前沒看到第二個(gè)條件，重新寫了下。 在本機(jī)上可以正確運(yùn)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{ // 定義組件 private JLabel lblTime; private JTextField txtInput; private JButton btnEnter; // 記錄所要啟動(dòng)的程序 private Process runningProcess; // 構(gòu)造方法 public TimeThreadFrame(){ // 設(shè)置窗體的相關(guān)屬性 super("TimerThread"); this.setSize(300,200); this.setLayout(null); this.setLocation(100,50); this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); // 創(chuàng)建組件 this.lblTime = new JLabel("請(qǐng)輸入倒計(jì)時(shí)時(shí)間"); this.lblTime.setBounds(30,20,200,30); this.txtInput = new JTextField(); this.txtInput.setBounds(30,70,100,30); this.btnEnter = new JButton("確定"); this.btnEnter.setBounds(150,70,70,30); this.runningProcess = null; // 給JTextField注冊(cè)監(jiān)聽 this.txtInput.addKeyListener(new KeyListener(){ public void keyPressed(KeyEvent ke) { } public void keyReleased(KeyEvent ke) { } public void keyTyped(KeyEvent ke) { txtInput_KeyTyped(ke); } }); // 給JButton注冊(cè)監(jiān)聽 this.btnEnter.addActionListener(new ActionListener(){ public void actionPerformed(ActionEvent ae){ btnEnter_ActionPerformed(ae); } }); // 將各組件添加到窗體上 add(lblTime); add(txtInput); add(btnEnter); // 顯示窗體 this.setVisible(true); } // 輸入時(shí)的事件處理，控制用戶只能輸入數(shù)字 public void txtInput_KeyTyped(KeyEvent ke){ if(ke.getKeyChar() '0' || ke.getKeyChar() '9'){ ke.setKeyChar('\0'); } } // 點(diǎn)擊按鈕時(shí)的事件處理，核心！ public void btnEnter_ActionPerformed(ActionEvent ae){ // 獲得用戶輸入的倒計(jì)時(shí)時(shí)間 String strTime = this.txtInput.getText(); if(strTime.equals("")){ // 檢測(cè)用戶是否輸入 this.lblTime.setText("您尚未輸入，請(qǐng)輸入！"); } else{ Integer time = Integer.parseInt(strTime); // 創(chuàng)建線程 TimeThread tt = new TimeThread(this.lblTime,time); tt.start(); // 創(chuàng)建Timer Timer timer = new Timer(); timer.schedule(new TimerTask(){ // 啟動(dòng)其他程序 public void run() { try { // 當(dāng)程序不存在時(shí)，會(huì)進(jìn)行創(chuàng)建；存在時(shí)直接調(diào)用。 runningProcess = Runtime.getRuntime().exec("D:\\Program Files\\Tencent\\QQDoctor\\QQDoctor.exe"); } catch (IOException e) { e.printStackTrace(); } } }, time * 1000); } } // 啟動(dòng)窗體 public static void main(String[] args){ TimeThreadFrame ttf = new TimeThreadFrame(); } } // 時(shí)間線程類 class TimeThread extends Thread{ private JLabel lblTime; private int time; // 構(gòu)造方法傳入，顯示事件的JLabel和倒計(jì)時(shí)的時(shí)間。 public TimeThread(JLabel lblTime, int time){ this.lblTime = lblTime; this.time = time; } // run方法 public void run(){ while(time 0){ // 顯示所剩時(shí)間 this.lblTime.setText("所剩時(shí)間：" + time); // 所剩時(shí)間減少 time--; try { this.sleep(1000); } catch (InterruptedException e) { e.printStackTrace(); } } } }

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怎么編寫一個(gè)倒計(jì)時(shí)的java的程序？求具體步驟！

基于控制臺(tái)的話很簡(jiǎn)單的，我跟你說一下大體思路吧，二話不說先來個(gè)for循環(huán)，然后輸出倒計(jì)時(shí)的數(shù)字，程序睡一秒，在輸出倒計(jì)時(shí)數(shù)字，如此循環(huán)，簡(jiǎn)單吧，下面看程序：

public static void main(String[] args) {

for(int i=10;i0;i--){

System.out.print(i+" ");

try {

Thread.sleep(1000);

} catch (InterruptedException e) {

e.printStackTrace();

}

}

System.err.print("爆炸");

}

其他基于網(wǎng)頁的還是基于用戶界面都可以使用這個(gè)思路的

java連連看里設(shè)置150秒倒計(jì)時(shí)，重行開始游戲時(shí)時(shí)間再次從150秒開始倒計(jì)時(shí)的代碼怎么寫，急?。。。。。?！

參考一下吧。

import?java.awt.FlowLayout;

import?java.awt.Font;

import?java.awt.event.ActionEvent;

import?java.awt.event.ActionListener;

import?javax.swing.JButton;

import?javax.swing.JFrame;

import?javax.swing.JLabel;

public?class?Program?{

static?int?seconds?=?150;

private?TimeThread?tt?=?null;

private?boolean?ttFlag?=?false;

private?void?init()?{

final?JLabel?tip?=?new?JLabel();

final?JButton?start?=?new?JButton("開始");

final?JButton?end?=?new?JButton("結(jié)束");

JFrame?f?=?new?JFrame();

f.setLayout(new?FlowLayout(5));

f.add(tip);

f.add(start);

f.add(end);

f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

f.setVisible(true);

f.setSize(300,?150);

f.setLocationRelativeTo(null);

start.addActionListener(new?ActionListener()?{

@Override

public?void?actionPerformed(ActionEvent?e)?{

start.setEnabled(false);

tip.setFont(new?Font("宋體",Font.BOLD,27));

ttFlag?=?true;

tt?=?new?TimeThread(tip);

tt.start();

}

});

end.addActionListener(new?ActionListener()?{

@Override

public?void?actionPerformed(ActionEvent?e)?{

start.setEnabled(true);

tip.setText("");

Program.seconds?=?150;

ttFlag?=?false;

}

});

}

/**

?*?@param?args

?*/

public?static?void?main(String[]?args)?{

new?Program().init();

}

class?TimeThread?extends?Thread?{

private?JLabel?tip;

TimeThread(JLabel?tip)?{

this.tip?=?tip;

}

@Override

public?void?run()?{

int?seconds?=?Program.seconds;

tip.setText(seconds+"");

while?(seconds--??0??ttFlag)?{

tip.setText(seconds+"");

try?{

Thread.sleep(1000);

}?catch?(InterruptedException?e)?{

e.printStackTrace();

}

}

}

};

}

用java編寫一個(gè)倒計(jì)時(shí)器代碼。

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("開始"); 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("計(jì)時(shí)器"); this.timeBetween = timeBetween; try { init(); } catch (Exception e) { e.printStackTrace(); } } public TimerDemo() { super("計(jì)時(shí)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("幼圓", 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);// 設(shè)定 1ms/次 // new TimerDemo(); } @Override public void actionPerformed(ActionEvent e) { if (e.getSource() == start) { if (start.getText().equals("開始")) { start.setText("暫停"); isRunning = true; } else if (start.getText().equals("暫停")) { start.setText("開始"); isRunning = false; } } if (e.getSource() == reset) { start.setText("開始"); 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(); } } } }}

java 設(shè)計(jì)一個(gè)簡(jiǎn)單的倒計(jì)時(shí)

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.KeyEvent;

import java.awt.event.KeyListener;

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{

// 定義組件

private JLabel lblTime;

private JTextField txtInput;

private JButton btnEnter;

// 構(gòu)造方法

public TimeThreadFrame(){

// 設(shè)置窗體的相關(guān)屬性

super("TimerThread");

this.setSize(300,200);

this.setLayout(null);

this.setLocation(100,50);

// 創(chuàng)建組件

this.lblTime = new JLabel("請(qǐng)輸入倒計(jì)時(shí)時(shí)間");

this.lblTime.setBounds(30,20,200,30);

this.txtInput = new JTextField();

this.txtInput.setBounds(30,70,100,30);

this.btnEnter = new JButton("確定");

this.btnEnter.setBounds(150,70,70,30);

// 給JTextField注冊(cè)監(jiān)聽

this.txtInput.addKeyListener(new KeyListener(){

public void keyPressed(KeyEvent ke) {

}

public void keyReleased(KeyEvent ke) {

}

public void keyTyped(KeyEvent ke) {

txtInput_KeyTyped(ke);

}

});

// 給JButton注冊(cè)監(jiān)聽

this.btnEnter.addActionListener(new ActionListener(){

public void actionPerformed(ActionEvent ae){

btnEnter_ActionPerformed(ae);

}

});

// 將各組件添加到窗體上

add(lblTime);

add(txtInput);

add(btnEnter);

// 顯示窗體

this.setVisible(true);

}

// 輸入時(shí)的事件處理，控制用戶只能輸入數(shù)字

public void txtInput_KeyTyped(KeyEvent ke){

if(ke.getKeyChar() '0' || ke.getKeyChar() '9'){

ke.setKeyChar('\0');

}

}

// 點(diǎn)擊按鈕時(shí)的事件處理，核心！

public void btnEnter_ActionPerformed(ActionEvent ae){

// 獲得用戶輸入的倒計(jì)時(shí)時(shí)間

String strTime = this.txtInput.getText();

if(strTime.equals("")){

// 檢測(cè)用戶是否輸入

this.lblTime.setText("您尚未輸入，請(qǐng)輸入！");

}

else{

Integer time = Integer.parseInt(strTime);

// 創(chuàng)建線程

TimeThread tt = new TimeThread(this.lblTime,time);

tt.start();

// 創(chuàng)建Timer

Timer timer = new Timer();

timer.schedule(new TimerTask(){

// 啟動(dòng)其他程序

public void run() {

System.out.print("ok");

}

}, time * 1000);

}

}

// 啟動(dòng)窗體

public static void main(String[] args){

new TimeThreadFrame();

}

}

// 時(shí)間線程類

class TimeThread extends Thread{

private JLabel lblTime;

private int time;

// 構(gòu)造方法傳入，顯示事件的JLabel和倒計(jì)時(shí)的時(shí)間。

public TimeThread(JLabel lblTime, int time){

this.lblTime = lblTime;

this.time = time;

}

// run方法

public void run(){

while(time 0){

// 顯示所剩時(shí)間

this.lblTime.setText("所剩時(shí)間：" + time);

// 所剩時(shí)間減少

time--;

try {

this.sleep(1000);

} catch (InterruptedException e) {

e.printStackTrace();

}

}

}

}

名稱欄目：java時(shí)間倒計(jì)時(shí)代碼 用java編寫一個(gè)倒計(jì)時(shí)程序
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