Small java Experiment

[Java]
Package Second;
Import java. awt .*;
Import javax. swing .*;
Import java. math .*;
Import java. awt. event .*;
Public class test1 implements ActionListener {
 
/**
* @ Param args
*/Www.2cto.com
Public JTextField s = new JTextField (13 );
Public JTextField s1 = new JTextField (13 );
Public JLabel l1 = new JLabel ("square ");
Public JLabel l2 = new JLabel ("cube ");
Public JLabel l3 = new JLabel (" ");
Public JButton b1 = new JButton ("square result ");
Public JButton b2 = new JButton ("cube result ");
Public JButton b3 = new JButton (" ");
Void display ()
{

JPanel panel = new JPanel (new GridLayout (4, 2 ));
JFrame jf = new JFrame ("Test Program ");
Jf. setSize (300,200 );
Jf. setContentPane (panel );
Jf. setVisible (true );
Jf. setdefaclocloseoperation (JFrame. EXIT_ON_CLOSE );
Jf. setResizable (false );
Panel. add (s );
Panel. add (s1 );
Panel. add (l1 );
Panel. add (b1 );
Panel. add (l2 );
Panel. add (b2 );
Panel. add (l3 );
Panel. add (b3 );
B1.addActionListener (this );
B2.addActionListener (this );
B3.addActionListener (this );
}
Public void actionreceivmed (ActionEvent e ){

If (e. getSource () = b1)
{
Double a = Double. parseDouble (s. getText ());
A = a *;
S1.setText ("" + );
}
Else if (e. getSource () = b2)
{
Double a = Double. parseDouble (s. getText ());
A = a *;
S1.setText ("" + );

}
Else if (e. getSource () = b3)
{
Double a = Double. parseDouble (s. getText ());
A = a *;
S1.setText ("" + );
}
}
Public static void main (String [] args ){
// TODO Auto-generated method stub
Test1 m = new test1 ();
M. display ();
}
 
}