progressbar

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

public class pbr extends JFrame    implements ActionListener

{

    Container c;

    Timer tm;

    JButton b1,b2,b3;

    JTextField tf;

    JProgressBar pbr;

    JLabel l;

    int i=0;

    pbr()

    {

        super("Progress Bar Demo");

        setLayout(null);

        setSize(500,200);

        c = getContentPane();

        ImageIcon imageicon = new ImageIcon("cut.gif");

        pbr = new JProgressBar();

        pbr.setMinimum(0);

        pbr.setMaximum(100);

        pbr.setStringPainted(true);

        pbr.setValue(i);

        pbr.setVisible(true);

        b1 = new JButton("Start");        b2 = new JButton("Stop");       

        b3 = new      JButton("Exit");

        l=new JLabel("Loading....");

        b1.setMnemonic('s');

        b1.setToolTipText("Click here to Start Loading");

        tf = new JTextField();

        c.add(b1).setBounds(10, 100, 70, 20);      

      

        c.add(b2).setBounds(100, 100, 70, 20);

        c.add(b3).setBounds(180, 100, 70, 20);

        c.add(l).setBounds(10,50,80,20);

        c.add(pbr).setBounds(150, 50, 200, 20);

        b1.addActionListener(this);         

        b2.addActionListener(this);

        b3.addActionListener(this);

         setVisible(true);

       tm=new Timer(100,  new ActionListener()

        {

         public void actionPerformed(ActionEvent evt)

          {

                    pbr.setValue(i);

                     i+=10;    

           }

                          });

addWindowListener(new WindowAdapter()

{

public void windowClosing(WindowEvent windowevent)

{

                                 System.exit(0); 

 }

        });

}

public void actionPerformed(ActionEvent ae)

    {

           

            if(ae.getSource() == b1)

                    {

                        tm.start();

                              b1.setEnabled(false);

                              b2.setEnabled(true);

                     }

            if(ae.getSource() == b2)

                    {

                              b1.setEnabled(true);

                              b2.setEnabled(false);

                        tm.stop();

                     }

            if(ae.getSource() == b3)

                    {

                        System.exit(0);

                     }

    }

    public static void main(String args[])

    {

        pbr pb1 = new pbr();

    }

}