How can we change the behaviour of a method by using proxy ??

Hi ,
can anybody tell me how we can add or change the behaviour of a method in java using the proxy object ?? it would be better if u put ur idea with an example .
Thanks ,
Ganesh

Please take your time to write full words: "you" instead of "u", "your" instead of "ur". It makes your posts a lot easier to read, especially for those of us who don't have English as their native language.
You can not really "modify" the behaviour of a method by using a proxy, but you can create a proxy, direct all but one method to the original method and provide a separate implementation for the target method.
This way you'll have two objects with the same interface (not only in the Java sense, but all methods look the same), but differing behaviour: the original object and the proxy.
Now if you pass around the proxy instead of the original object, then it'll look as if you changed the behaviour of your object.

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How can we change the behaviour of a method by using proxy ??

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