Practical 13: Write a program to demonstrate the use of Window Adapter class. ~ Coding Atharva

Program:

import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.JFrame;
import javax.swing.JLabel;
import java.awt.event.WindowListener;
import java.awt.FlowLayout;

public class WindowAdapterDemo  extends WindowAdapter
{
    JFrame f ;
    JLabel l ;
    WindowAdapterDemo()
    {
        f = new JFrame();
        f.setVisible(true);                    
        f.setSize(400,400);
        f.setLayout(new FlowLayout());
        f.addWindowListener(this);
        f.addWindowFocusListener(this);
    }

    public void windowLostFocus(WindowEvent we)
    {
        l = new JLabel("Window Lost Focus");
        f.remove(l);
        f.add(l);
    }
    public void windowOpened(java.awt.event.WindowEvent we)
    {
        l = new JLabel("Window Opened");
        f.remove(l);
        f.add(l);
    }

    public void windowActivated(java.awt.event.WindowEvent we)
    {
        l = new JLabel("Window Activated");
        f.remove(l);
        f.add(l);
    }
    public void windowDeactivated(java.awt.event.WindowEvent we)
    {
        l = new JLabel("Window Deactivated");
        f.remove(l);
        f.add(l);
    }

    public void windowGainedFocus(java.awt.event.WindowEvent we)
    {
        l = new JLabel("Window Gained Focus");
        f.remove(l);
        f.add(l);
    }


    public static void main(String[] args) 
    {
        WindowAdapterDemo wa = new WindowAdapterDemo();
    }
}

Output:

2) Write a program to demonstrate the use of anonymous inner class.
Ans:

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
public class AnonymousInner extends JFrame
{
    public static void main(String[] args) {
        AnonymousInner ai = new AnonymousInner();

        JButton jb = new JButton(" Don't Click Me Bro ");

        jb.addActionListener(new ActionListener(){
            public void actionPerformed(ActionEvent ae)
            {
                System.out.println("Action Event:"+ae);
            }
        });

        ai.add(jb);
        ai.pack();
        ai.setVisible(true);
    }
}

Output:

3) Write a program using MouseMotionAdapter class to implement only one method mouseDragged().
Ans:

import java.awt.event.MouseMotionAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseMotionListener;
import java.applet.Applet;

public class AdapterMouseDrag extends Applet
{
    public void init()
    {
        addMouseMotionListener(new MouseDrag(this));
    }
}


class MouseDrag extends MouseMotionAdapter
{
    AdapterMouseDrag ad;

  
    public MouseDrag(AdapterMouseDrag ad)
    {
        this.ad = ad;
    }

    public void mouseDragged(MouseEvent me)
    {
        ad.showStatus("Mouse Dragged");
    }

}

/*
    

    
*/

Output:

Practical 13: Write a program to demonstrate the use of Window Adapter class.

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