Write a JAVA program to design a screen with two textboxes and start button. Clicking on start button should start two threads printing 1-100 in two boxes.

import java.awt.*;

import java.awt.event.*;

public class slip20 extends Frame implements ActionListener,Runnable

    {

     Button b1,b2;

    TextField t11,t12;

    int cnt;

    Thread t1=new Thread(this,"t1");

    Thread t2=new Thread(this,"t2");

    public slip20()

    {

    setLayout(null);

    t11=new TextField();

    t12=new TextField();

    b1=new Button("Start");

    b2=new Button("Stop");

    t11.setBounds(50,50,100,100);

    t12.setBounds(160,50,100,100);

    b1.setBounds(50,170,100,30);

    b2.setBounds(160,170,100,30);

    add(t11);

    add(t12);

    b1.addActionListener(this);

    b2.addActionListener(this);

    add(b1);

    add(b2);

    setSize(400,400);

    setVisible(true);

    cnt=0;

    addWindowListener(new WindowAdapter()

    {

    public void windowClosing(WindowEvent e)

    {

     System.exit(0);

    }

    });

}

    public void actionPerformed(ActionEvent ae)

    {

     String str;

     str=ae.getActionCommand();

    if(str.equals("Start"))

    {

     t1.start();

    t2.start();

    }

    else if(str.equals("Stop"))   

    {

     t1.stop();

    t2.stop();

    }}

    public void run()

    {

     try

    {

     for(int i=1;i<=100;i++)

    {

     t11.setText(""+i);

    t1.sleep(150);

    t12.setText(""+i);

    t2.sleep(150);

    }}

        catch(Exception e)

    {}

    }    public static void main(String args[])

    {

    new slip20().show();

    }}