该楼层疑似违规已被系统折叠 隐藏此楼查看此楼

import java.awt.*;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.text.DecimalFormat;

import java.text.NumberFormat;

import javax.swing.*;

import javax.swing.event.CaretEvent;

public class time extends Thread{

JFrame f=new JFrame("m");

JTextField a=new JTextField("0.0",8);

JButton b1=new JButton("start");

JButton b2=new JButton("stop");

JButton b3=new JButton("continue");

Thread thread;

private long startTime=System.currentTimeMillis();

private long time1=0;

public boolean r=true;

private NumberFormat numberFormat=new DecimalFormat("0.000");

private double time;

public void init(){

JPanel bot=new JPanel();

bot.add(a);

bot.add(b1);

bot.add(b2);

bot.add(b3);

f.add(bot,BorderLayout.NORTH);

b1.addActionListener(new Second());

b2.addActionListener(new First());

b3.addActionListener(new First());

Thread thread=new Thread(new First());

f.pack();

f.setVisible(true);

}

class First implements ActionListener, Runnable{

public void actionPerformed(ActionEvent e) {

if(e.getSource()==b2){

r=false;

b1.setEnabled(true);

b2.setEnabled(false);

b3.setEnabled(true);

}

if(e.getSource()==b3){

thread=new Thread(new First());

thread.resume();

b2.setEnabled(false);

b1.setEnabled(false);

b3.setEnabled(true);

}

}

public void run() {

startTime=System.currentTimeMillis();

while(r){

try {

Thread.sleep(100);

}

catch (InterruptedException e) {

e.printStackTrace();

}

double time=(System.currentTimeMillis()-startTime);

a.setText(numberFormat.format(time/1000));

}

}

}

class Second implements ActionListener{

public void actionPerformed(ActionEvent e) {

if(e.getSource()==b1)

{

thread=new Thread(new First());

thread.start();

b1.setEnabled(false);

b2.setEnabled(true);

b3.setEnabled(false);

}

}

}

public static void main(String[] args) {

// TODO Auto-generated method stub

new time().init();

}

}