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Checked and Unchecked exceptions

subash chandar

Joined: Feb 07, 2005
Posts: 8
What is the difference between checked and unchecked exception.

How to identify whether an exception is checked or unchecked.
Is RunTimeException checked or unchecked
Paul Sturrock

Joined: Apr 14, 2004
Posts: 10336

Checked exceptions are have to be handled at compile time, unchecked exceptions need to be handled at runtime. Checked exceptions subclass java.lang.Exception, unchecked exceptions subclass java.lang.RuntimeException. Here this can be a little confusing, since RuntimeException also extends Exception. The thinking is that unchecked exceptions are supposed to be more trivial (though this is not necessarily how it works in practice).

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