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When to use inner classes?

 
Ranch Hand
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Hi,
Can you anyone please tell me when should i go for inner classes? How does it help if i use an inner class replacing a separate class?
 
Greenhorn
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hi Shaik,

There are lots of discussion done on the SCJP side of Java ranch..
you can follow it up there...
its quite interesting and with lots of real time examples.

hope that helps

 
Shaik Muhammad
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Thanks sanjeev
 
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Its common to use an inner class when adding an ActionEvent to a listener, for example in Swing. This removes the need to conditionally test what button has been clicked in a function to designate the appropriate action: A quick sketch example would be....

J


The inner class would then extend the relevant abstract classes for action-Events and the overridden method ActionPerformed() will handle the button click. Take a look also on the Swing Forums here at the ranch.
 
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