今天给各位分享java时间计数器的知识,其中也会对java 计时器进行解释,如果能碰巧解决你现在面临的问题,别忘了关注本站,现在开始吧!
本文目录一览:
1、如何用java实现一个计时器?2、用JAVA编写计时器3、做一个Java计时器?4、用java编写一个计数器或计时器
如何用java实现一个计时器?
用java实现一个计时器的方法:
public class TestDingShi implements Runnable
{
Thread xc;
Dao dao=new DaoImpl();
public TestDingShi()
{
xc=new Thread(this);//线程开启
xc.start();
}
public void run()
{
while (true)
{
try
{
xc.sleep(1000);//睡眠开始计时
}
catch (InterruptedException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
//TODO定时在此
}
}
}
用JAVA编写计时器
计时器可以使用timer类也可以使用线程类来操作,下面是Thread做的简单的计时器
public class Calculagraph extends Thread {
public static void main(String[] args) {
new Calculagraph().start();
}
private long now = 0l;
private long start = System.currentTimeMillis();// 程序启动时间的毫秒值
private long time;
public void run() {
while (true) {
now = System.currentTimeMillis();// 获取一秒之后的毫秒值
time = now – start;// 两个时间相减的到毫秒差
System.out.format(“%02d:%02d:%02d\n”,
time / (1000 * 60 * 60) % 60/* 时 */,
time / (1000 * 60)% 60/* 分 */,
time / 1000 % 60/* 秒 */);// 格式化字符串输出
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}
做一个Java计时器?
您好,茫茫人海之中,能为君排忧解难实属朕的荣幸,在下拙见,若有错误,还望见谅!。展开全部
怎么还没人回答,看不过去了,用不用多线程根据你的程序需要,
import java.io.IOException;
import java.util.Timer;
public class TimerTest {
public static void main(String[] args){
Timer timer = new Timer();
timer.schedule(new MyTask(), 1000, 2000);//在1秒后执行此任务,每次间隔2秒,如果传递一个Data参数,就可以在某个固定的时间执行这个任务.
while(true){//这个是用来停止此任务的,否则就一直循环执行此任务了
try {
int ch = System.in.read();
if(ch-‘c’==0){
timer.cancel();//使用这个方法退出任务
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
static class MyTask extends java.util.TimerTask{
@Override
public void run() {
//你要进行的操作
}
}
}
大概就是这样了,在根据你的业务需要查一下资料,就可以搞定了!非常感谢您的耐心观看,如有帮助请采纳,祝生活愉快!谢谢!
用java编写一个计数器或计时器
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();
}
}
}
}
}
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