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Exceptions : Help Needed

Sandeep Vaid
Ranch Hand

Joined: Feb 27, 2006
Posts: 392
Friends,

Please let me know if there is a rule which specifies whether an exception is unchecked or checked by just looking @ exception name? In other words how you came to know that NullPointerException is a unchecked exception and IOException is a checked exception.?
Andrea Z�rcher
Greenhorn

Joined: Oct 06, 2006
Posts: 10
NullPointerException is a subclass from RuntimeException. All subclasses from RuntimeException are unchecked exceptions. IOException is a direct subtype from java.lang.Exception. So it's a checked exception.


SCJP 5.0
 
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