Example of setActionCommand and getActionCommand in java.

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

class mahi1 implements ActionListener

{

JFrame f;

Label l1,l2;

JButton b1,b2,b3;

Panel p;

mahi1()

{

f=new JFrame("MaHi");

f.setSize(400,400);

f.setLayout(new GridLayout(3, 1));

f.setVisible(true);

l1=new Label();

l1.setText("Press Any Key");

l1.setAlignment(l1.CENTER);

f.add(l1);

p = new Panel();

p.setLayout(new FlowLayout());

b1=new JButton("Ok");

b2=new JButton("Submit");

b3=new JButton("Cancel");

b1.setActionCommand("OK");

b2.setActionCommand("Submit");

b3.setActionCommand("Cancel");

b1.addActionListener(this); 

b2.addActionListener(this); 

b3.addActionListener(this);

p.add(b1);

p.add(b2);

p.add(b3);

f.add(p);

l2 = new Label();        

l2.setAlignment(Label.CENTER);

l2.setSize(350,100);

f.add(l2);

}

public void actionPerformed(ActionEvent e)

{

        String command = e.getActionCommand();  

        if( command.equals( "OK" ))

{

l2.setText("Ok Button clicked.");

        }

        else if( command.equals( "Submit" ) )

{

l2.setText("Submit Button clicked.");

}

        else

{

            l2.setText("Cancel Button clicked.");

        }

    }

public static void main(String surat[])

{

new mahi1();

}

}

Output: