ThisIsClockBitch

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.text.SimpleDateFormat;

public class MyNewClock extends JFrame implements ActionListener {
    JLabel label;
    JButton button;
     JButton button2;
       JButton button3;
     PrimeTask pt;

    public MyNewClock(){
        super("My new clock");
        label = new JLabel();
          SimpleDateFormat sdf1 = new SimpleDateFormat("MM-dd-yyyy hh:mm:ss a");
        label.setText("Time: " + sdf1.format(new java.util.Date()));
        button = new JButton("start");
        button.addActionListener(this);
          button2 = new JButton("stop");
        button2.addActionListener(this);
                  button3 = new JButton("close");
        button3.addActionListener(this);
        Container c = this.getContentPane();
        c.setLayout(new FlowLayout());
        c.add(button);
        c.add(button2);
          c.add(button3);
        c.add(label);
        this.setSize(300,100);
        this.setLocation(300,300);
        this.setVisible(true);


    }



  public void actionPerformed(ActionEvent ae){
          if(ae.getSource().equals(button)){
        pt = new PrimeTask(label);
      pt.execute();
      }
               if(ae.getSource().equals(button2)){

      pt.stop();
      }
                     if(ae.getSource().equals(button3)){

      System.exit(0);
      }

  }

    public static void main(String[] args) {
        new MyNewClock();
    }

}
class PrimeTask extends SwingWorker{
         JLabel lbl;
          SimpleDateFormat sdf;
    boolean toRun = true;

    PrimeTask(JLabel lbl){
        this.lbl = lbl;
           sdf = new SimpleDateFormat("MM-dd-yyyy hh:mm:ss a");
        
    }

    
    public String doInBackground(){
        String s = null;
              toRun = true;
              //int count =0;
                 try{

              while( toRun) {
        Thread.currentThread().sleep(1000);
              java.util.Date  d = new java.util.Date();
                  lbl.setText("Time: " + sdf.format(d));
                //  count++;
              }

                 }catch(Exception ex){
                     ex.printStackTrace();
                 } 


        return s;
    }

    public void stop(){
        toRun = false;

    }

}