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creating our own unchecked Exceptions

 
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When we create user defined exceptions,those are checked exceptions.Is there any way through which we can create user defined unchecked exceptions.
 
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Extend RuntimeException or a subclass of RuntimeException, instead of Exception or a subclass of Exception.
 
Raj Kumar Bindal
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Thanks Rob.but i don't see any usage of making user defined unchecked exceptions.Can you tell me some scenario where user defined unchecked exceptions are helpful.
 
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