event handling error .. need help

[abhay jain]

import java.applet.Applet;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.event.*;


/*
<applet code= mouse1 width =200 height=100>
</applet>
*/

public class Mouse1 extends Applet implements  MouseListener, MouseMotionListener
{

String txt= "nothing";
int x= 10 , y= 30;
public void init()
{
addMouseListener(this);
addMouseMotionListener(this);
}


public void mouseEntered(MouseEvent me)
{
txt="mouse entered";
repaint();
}

public void mouseClicked(MouseEvent me)
{
txt="mouse clicked";
repaint();
}
public void mouseDragged(MouseEvent me)
{
txt="mouse dragged";
repaint();
}
public void mouseExited(MouseEvent me)
{
txt="mouse exited";
repaint();
}

public void mouseMoved(MouseEvent me)
{
txt="mouse moved";
repaint();
}
public void paint(Graphics g)
{
g.drawString (txt, 20, 40);
showStatus("Mouse event handling");

}

}

/*

C:\>javac Mouse1.java
Mouse1.java:12: Mouse1 is not abstract and does not override abstract method mou
seReleased(java.awt.event.MouseEvent) in java.awt.event.MouseListener
public class Mouse1 extends Applet implements MouseListener, MouseMotionListener
^
1 error

*/
[/code]

[Yogesh Gnanapraksam]

Hi Abhay,
Whenever you implement an interface,make sure you satisfy the contract specified by the interface.
The error message clearly states that
mouseReleased(java.awt.event.MouseEvent) method declared in the interface is not implemented in your class.

You can just provide a dummy implementation if you do not wish to handle the mousereleased event.
public void mouseReleased(java.awt.event.MouseEvent e)
{
`
}

Thanks
Yogi

[abhay jain]

You can just provide a dummy implementation if you do not wish to handle the mousereleased event.
public void mouseReleased(java.awt.event.MouseEvent e)
{
`
}

Thanks
Yogi

thanks yogi ,
it works after one more .....mousePressed event , so we can say that it was necessary to put that dummy code because we implemented related interfaces .. right ?? or there is another reason behind it ??

[Rob Spoor]

If a class implements an interface it must implement all methods of that interface. In those cases you don't want to, you must provide skeleton implementations - empty bodies where void is returned, and returning some constant where a return value is required.