File APIs for Java Developers
Manipulate DOC, XLS, PPT, PDF and many others from your application.
http://aspose.com/file-tools
  • Post Reply
  • Bookmark Topic Watch Topic
  • New Topic

event handling error .. need help

 
abhay jain
Ranch Hand
Posts: 130
  • 0
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator


/*

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
Ranch Hand
Posts: 133
  • 0
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
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
Ranch Hand
Posts: 130
  • 0
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator


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
Sheriff
Pie
Posts: 20396
47
Chrome Eclipse IDE Java Windows
  • 0
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
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.
 
I agree. Here's the link: http://aspose.com/file-tools
  • Post Reply
  • Bookmark Topic Watch Topic
  • New Topic