CODEWITHSUNDEEP
javaevent-handling
dave
dave

Reputation: 419

event handling question

yellowButton.addActionListener(this);

what is (this) referring to in the addActionListener method. and can someone tell me how actionListener method works?

Upvotes: 0

Views: 163

Answers (2)

Nick ODell
Nick ODell

Reputation: 25249

this refers to the current object. The current object implements the interface ActionListener. When an action happens, the actionPerformed method is invoked.

Upvotes: 2

Bozho
Bozho

Reputation: 597106

this is the current object. It has to implement the ActionListener interface.

This is often used in order to have all the related code in one place. But you can also use yellowButton.addActionListener(new ButtonActionListener()), where ButtonActionListener is another class of yours.

Classes that implement ActionListener should specify what happens when an action happens.

Upvotes: 3

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