Adaptor class

Adaptor class

• The adaptor classes are very special classes that are used to make event handling.
•  There are listener interfaces that have many methods for event handling.
• By implementing an interface we have to implement all the methods of that interface.
•  By sometimes we need only one or some methods of the interface.
• In that case we use adaptor class.
• For example, the MouseListener interface has five methods mouseClicked(), mouseEntered(), mouseExited(), mousePressed() and mouseReleased().
• If in your program you just need two events but you implement five methods of interface.
• So you can use the adaptor class.
• The adaptor class contain an empty implementation for each method of the event listener interface.