计时器的java代码计时器 java

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求人用java编写一条计时器代码。

import java.awt.BorderLayout;

import java.awt.Container;

import java.awt.GridLayout;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.WindowEvent;

import java.awt.event.WindowListener;

import java.io.*;

import java.util.*;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JOptionPane;

import javax.swing.JPanel;

import javax.swing.JTextField;

import javax.swing.plaf.OptionPaneUI;

public class Demo {

static boolean isRuning=false;

static boolean isFirst=true;

@SuppressWarnings("unchecked")

public static void main(String[] args) throws Exception {

JFrame form1 = new JFrame("Form1");

JTextField jTextField = new JTextField(10);

jTextField.setSize(10, 10);

jTextField.setText("0");

jTextField.setEditable(false);

JButton jButton = new JButton("开始");

jButton.setSize(10, 10);

Thread thread = new Thread(new Runnable() {

@Override

public void run() {

while (true) {

while(isRuning){

Integer counter = Integer.parseInt(jTextField.getText().trim());

counter++;

jTextField.setText(counter.toString());

try {

Thread.sleep(1000);

} catch (Exception e2) {

}

});

jButton.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

String text=jButton.getText().equals("开始")?"暂停":"开始";

jButton.setText(text);

isRuning=!isRuning;

if(isFirst){

thread.start();

isFirst=false;

}

});

JPanel panel = new JPanel();

panel.setSize(200, 200);

panel.add(jTextField, BorderLayout.NORTH);

panel.add(jButton, BorderLayout.CENTER);

form1.add(panel);

form1.setBounds(200, 100, 250, 150);

form1.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

form1.addWindowListener(new WindowListener() {

@Override

public void windowOpened(WindowEvent e) {

// TODO Auto-generated method stub

}

@Override

public void windowIconified(WindowEvent e) {

// TODO Auto-generated method stub

}

@Override

public void windowDeiconified(WindowEvent e) {

// TODO Auto-generated method stub

}

@Override

public void windowDeactivated(WindowEvent e) {

// TODO Auto-generated method stub

}

@Override

public void windowClosing(WindowEvent e) {

// 窗口关闭前取出文本框计时器的java代码的数字保存到外部文件计时器的java代码，代码在此处写

JOptionPane.showMessageDialog(null, "Are you sure closing?");

}

@Override

public void windowClosed(WindowEvent e) {

// TODO Auto-generated method stub

}

@Override

public void windowActivated(WindowEvent e) {

// TODO Auto-generated method stub

}

});

form1.setVisible(true);

}

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: 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();

}

Q3: 求java的计时器代码，应该比较简单的，来看看吧。

package test;

import java.util.*;

import java.awt.*;

import java.awt.event.*;

import java.applet.*;

public class Test5 extends Applet {

private final Panel pan = new Panel();

private final Label time = new Label();

private final Button btnGo = new Button("开始");

private final Button btnPouse = new Button("暂停");

private final Button btnReset = new Button("复位");

private final StopwatchThread swThread = new StopwatchThread();

private class btnGoListener implements ActionListener {

public void actionPerformed(ActionEvent e) {

swThread.go();

btnGo.setEnabled(false);

}

private class btnPouseListener implements ActionListener {

public void actionPerformed(ActionEvent e) {

if(btnGo.isEnabled()){

return ;

}

if (btnPouse.getLabel().equals("继续")) {

swThread.go();

btnPouse.setLabel("暂停");

} else if (btnPouse.getLabel().equals("暂停")) {

swThread.noGo();

btnPouse.setLabel("继续");

}

private class btnResetListener implements ActionListener {

public void actionPerformed(ActionEvent e) {

swThread.reset();

btnGo.setEnabled(true);

btnGo.setLabel("开始");

btnPouse.setLabel("暂停");

}

private class StopwatchThread extends Thread {

private boolean going = false;

private long prevElapsed = 0;

private Date startDate = new Date();

private long elapsedTime() {

return prevElapsed +

(going ? new Date().getTime() - startDate.getTime() : 0);

}

private String msToString(long time) {

System.out.println(time+" "+((0*60+2)*1000+999));

if(((99*60+59)*1000+983)=time((99*60+59)*1000+999)=time){//((0*60+2)*1000+983)=time((0*60+2)*1000+999)=time

if (time % 1000 990)

time += 2;

swThread.noGo();

}

String ms, sec, min;

if (time % 10 = 5)

time += 5;

ms = Long.toString(time % 1000);

while (ms.length() 3)

ms = "0" + ms;

ms = ms.substring(0, ms.length() - 1);

time /= 1000;

sec = Long.toString(time % 60);

if (sec.length() == 1) sec = "0" + sec;

time /= 60;

min = Long.toString(time);

return min + ":" + sec + "." + ms;

}

public void go() {

startDate = new Date();

going = true;

}

public void noGo() {

prevElapsed = elapsedTime();

going = false;

}

public void reset() {

going = false;

prevElapsed = 0;

}

public void run() {

while (true) {

time.setText(msToString(elapsedTime()));

yield();

}

public void init() {

setLayout(new GridLayout(2,2));

setBackground(Color.lightGray);

setForeground(Color.black);

pan.setLayout(new GridLayout(3,2));

pan.add(new Label("计时:"));

time.setForeground(Color.blue);

pan.add(time);

pan.add(btnGo);

pan.add(btnPouse);

pan.add(btnReset);

pan.add(new Label());

add(pan);

btnGo.addActionListener(new btnGoListener());

btnReset.addActionListener(new btnResetListener());

btnPouse.addActionListener(new btnPouseListener());

swThread.setDaemon(true);

swThread.start();

}

public static void main(String[] args) {

Test5 applet = new Test5();

Frame aFrame = new Frame("计时器");

aFrame.addWindowListener(new WindowAdapter() {

public void windowClosing(WindowEvent e) {

System.exit(0);

}

});

aFrame.add(applet, BorderLayout.CENTER);

aFrame.setSize(400, 200);

applet.init();

applet.start();

aFrame.setVisible(true);

}

可以改变有注释计时器的java代码的那个if语句里面计时器的java代码的值来判断什么时候停止

Q4: java计时器秒表源代码

import java.awt.*;

public class Clock {

private int hour;

private int minute;

private int second;

public Clock(){

}

public Clock(int hrs,int min,int sec){

hour =hrs % 12;

minute = min;

second = sec;

}

void show (Graphics g,int cx,int cy,int rad){

int hourLenght = (int)(rad * 0.5);//时针的长度

int minuteLenght = (int)(rad * 0.6);//分针的长度

int secondLenght = (int)(rad * 0.9);//秒针的长度

double angle;//角度

//画出钟面

g.drawOval(cx-rad, cy - rad, rad * 2, rad * 2);

//画出时针

angle = (double)(hour*60*60 + minute*60 + second)/43200.0*2.0*Math.PI;

drawNiddle(g,Color.blue, cx, cy, hourLenght,angle);

//画分针

angle = (double)(minute*60 + second)/3600 * 2.0 * Math.PI;

drawNiddle(g,Color.blue, cx, cy, minuteLenght,angle);

// 画秒针

angle = (double)(second)/60*2.0*Math.PI;

drawNiddle(g,Color.blue, cx, cy, secondLenght,angle);

}

private void drawNiddle(Graphics g ,Color c,int x,int y,int len,double angle){

int ex = (int)(x + len * Math.sin(angle));

int ey = (int)(y - len * Math.cos(angle));

g.setColor(c);

g.drawLine(x,y,ex,ey);

}

----------------ClockTest1.java---------------------

import javax.swing.*;

import java.awt.*;

import java.util.*;

public class ClockTest1 extends JFrame{

/**

* @param args

private Clock clock ;

private Date timeNow;

public ClockTest1(){

super("时钟");

setSize(400,400);

setVisible(true);

}

public void paint(Graphics g){

super.paint(g);

timeNow = new Date();

clock = new Clock(timeNow.getHours(),timeNow.getMinutes(),timeNow.getSeconds());

clock.show(g,170,150,100);

try{

//for(int i =0 ; i 10 ; i += 10)

Thread.sleep(1000);

}catch(InterruptedException e){

}

repaint();

}

public static void main(String[] args) {

// TODO 自动生成方法存根

ClockTest1 appication = new ClockTest1();

appication.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

}

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正文

求人用java编写一条计时器代码。

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求人用java编写一条计时器代码。

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