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JButton in Java Swing example
- 1. Adding a action listener to button
import javax.swing.JButton;
import javax.swing.JFrame;
import java.awt.event.ActionListener;
import java.awt.Component;
import java.awt.event.ActionEvent;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
public class action_listner_implementation extends JFrame {
action_listner_implementation()
{ setSize(200, 200);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JButton button1 = new JButton("Message dialog");
button1.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
JOptionPane.showMessageDialog((Component) e.getSource(), "Thank
you!");}});
JPanel jp=new JPanel();
jp.add(button1);
getContentPane().add(jp);
}
public static void main(String[] args) {
action_listner_implementation a=new action_listner_implementation();
a.setVisible(true);
}
}