java--多线程实现计数器

同时开始5个线程，用各自的文本框显示count,和按钮控制count的自加

import java.awt.*;

import java.awt.event.*;

import java.applet.*;

class Ticker extends Thread{

private Button t=new Button("toggle");

private TextField tf=new TextField(10);

//开关控制count的变化

private runFlag=true;

private int count=0;

class Stop implements ActionListener{

@Override

public void actionPerformed(ActionEvent e){

runFlag=!runFlag;

}

}

public Ticker(Container c){

t.addActionListener(new Stop());

//Panel容器

Panel p=new Panel();

p.add(t);

p.add(tf);

c.add(p); 

}

@Override

public void run(){

while(true){

try(

Thread.currentThread().sleep(200);

}catch(InterruptedException e){

e.printStackTrace();

}

if(runFlag)

tf.setText(Integer.toString(++count));

}

}

}

public class Counter extends Applet{

private Button start=new Button("Start");

private boolean started=false;

private int size=0;

private Ticker[] ts;

@Override

public void init(){

start.addActionListener(new Start());

add(start);

ts=new Ticker[size];

for(int i=0;i<size;i++){

ts[i]=new Ticker(Counter.this);

}

}

class Start implements ActionListener{

@Override

public void actionPerformed(ActionEvent e){

if(!started){

started=true;

for(int i=0;i<size;i++){

ts[i].start();

}

}

}

}

public static void main(String[] args){

Counter c=new Counter();

Frame frame=new Frame("程序片");

frame.addWindowListener(

new WindowAdapter(){

@Override

public void windowClosing(WindowEvent e){

System.exit(0);

}

}

);

frame.setSize(300,c.size*50);

frame.add(c,BorderLayout.CENTER);

c.init();

c.start();

frame.setVisible(true);

}

}

/**--注意--**/

以上代码都是在文本编辑器中写的，可能会有些许纰漏