What is the use of action command in event handling ? Explain with example.

Action command is used to handle event caused by the Buttons.


 import javax.swing.*;

import java.awt.*;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

public class ActionDemo extends JFrame implements ActionListener {

JLabel l1, l2, l3;

JTextField t1, t2, t3;

JButton b1, b2;

public ActionDemo() {

super("Handling Action Event");

l1 = new JLabel("Click on button to get result");

t1 = new JTextField(20);

b1 = new JButton("Demo Button");


setLayout(new FlowLayout(FlowLayout.CENTER, 150, 10));




setSize(400, 300);



public void actionPerformed(ActionEvent actionEvent) {

String str = actionEvent.getActionCommand(); //using action command

t1.setText("You have clicked " + str);


public static void main(String[] args) {

new ActionDemo();



In the above example if clicked on the Demo Button, with the help of the getActionCommand() method we will be able to see the click event done on the output.


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