Swing JCheckBox Events With ActionListener

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import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.AbstractButton;
import javax.swing.JCheckBox;
import javax.swing.JFrame;

public class JavaSwginJCheckBoxActionListner {
	
	public static void main(String args[]) {
	    JFrame frame = new JFrame("CheckBox Action Listner ");
	    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	    JCheckBox aCheckBox4 = new JCheckBox("Click Me");
	    ActionListener actionListener = new ActionListener() {
	    	
	      public void actionPerformed(ActionEvent actionEvent) {
	        AbstractButton abstractButton = (AbstractButton) actionEvent.getSource();
	        boolean selected = abstractButton.getModel().isSelected();
	        System.out.println(selected);

	      }
	      
	    };
	    aCheckBox4.addActionListener(actionListener);
	    frame.add(aCheckBox4);
	    frame.setSize(300, 200);
	    frame.setVisible(true);
	  }
}
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