Main.java Source code

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Here is the source code for Main.java

Source

import javax.swing.AbstractButton;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;

public class Main {
    public static void main(String[] args) {
        AbstractButton jb = new JButton("Press Me");

        jb.addChangeListener(new ChangeListener() {
            public void stateChanged(ChangeEvent ev) {
                System.out.println("ChangeEvent!");
            }
        });
        ChangeListener[] lis = jb.getChangeListeners();
        JFrame f = new JFrame();
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.getContentPane().add(jb);
        f.pack();
        f.setVisible(true);
    }
}