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("計時器"); this.timeBetween = timeBetween; try { init(); } catch (Exception e) { e.printStackTrace(); } } public TimerDemo() { super("計時器"); 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(); } } } }}
讓客戶滿意是我們工作的目標，不斷超越客戶的期望值來自于我們對這個行業(yè)的熱愛。我們立志把好的技術(shù)通過有效、簡單的方式提供給客戶，將通過不懈努力成為客戶在信息化領(lǐng)域值得信任、有價值的長期合作伙伴，公司提供的服務項目有：域名注冊、網(wǎng)站空間、營銷軟件、網(wǎng)站建設、山亭網(wǎng)站維護、網(wǎng)站推廣。
我試了一下沒有錯呀!
我還有一個：
script LANGUAGE="JavaScript"
!--你可以將新年改為其它的節(jié)日--
var urodz= new Date("January 29,2006");
var s="新年";
var now = new Date();
var ile = urodz.getTime() - now.getTime();
var dni = Math.floor(ile / (1000 * 60 * 60 * 24));
if (dni 1)
document.write("今天離"+s+"還有"+dni +"天")
else if (dni == 1)
document.write("只有2天啦！")
else if (dni == 0)
document.write("只有1天啦！")
else
document.write("好象已經(jīng)過了哦！");
/script
public?static?void?main(String[]?args)?{
for?(int?i?=?100?;?i?=?0?;?i?--)?{
System.out.println(i);
try?{
Thread.sleep(1000);
}?catch?(InterruptedException?e)?{
e.printStackTrace();
}
}
System.out.println("結(jié)束");
}
public?class?Timer?implements?Runnable?{
int?i=10;
public?static?void?main(String[]?args)?{
Timer?t=new?Timer();
Thread?th=new?Thread(t);
th.start();
}
@Override
public?void?run()?{
try?{
while(true){
i--;
Thread.sleep(1000);
System.out.println(i);
if(i==7){
System.out.println("還剩7秒爆炸");
}
if(i==1){
System.out.println("差點就掛了");
return;
}
}
}?catch?(Exception?e)?{
e.printStackTrace();
}
}
}
應該是這樣吧
基于控制臺的話很簡單的，我跟你說一下大體思路吧，二話不說先來個for循環(huán)，然后輸出倒計時的數(shù)字，程序睡一秒，在輸出倒計時數(shù)字，如此循環(huán)，簡單吧，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思路的
抱歉，之前沒看到第二個條件，重新寫了下。
在本機上可以正確運行。
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;
// 記錄所要啟動的程序
private Process runningProcess;
// 構(gòu)造方法
public TimeThreadFrame(){
// 設置窗體的相關(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("請輸入倒計時時間");
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');
}
}
// 點擊按鈕時的事件處理，核心！
public void btnEnter_ActionPerformed(ActionEvent ae){
// 獲得用戶輸入的倒計時時間
String strTime = this.txtInput.getText();
if(strTime.equals("")){
// 檢測用戶是否輸入
this.lblTime.setText("您尚未輸入，請輸入！");
}
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(){
// 啟動其他程序
public void run() {
try {
// 當程序不存在時，會進行創(chuàng)建；存在時直接調(diào)用。
runningProcess = Runtime.getRuntime().exec("D:\\Program Files\\Tencent\\QQDoctor\\QQDoctor.exe");
} catch (IOException e) {
e.printStackTrace();
}
}
}, time * 1000);
}
}
// 啟動窗體
public static void main(String[] args){
TimeThreadFrame ttf = new TimeThreadFrame();
}
}
// 時間線程類
class TimeThread extends Thread{
private JLabel lblTime;
private int time;
// 構(gòu)造方法傳入，顯示事件的JLabel和倒計時的時間。
public TimeThread(JLabel lblTime, int time){
this.lblTime = lblTime;
this.time = time;
}
// run方法
public void run(){
while(time 0){
// 顯示所剩時間
this.lblTime.setText("所剩時間：" + time);
// 所剩時間減少
time--;
try {
this.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}
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重慶分公司
