What is the difference between compile time exception and runtime exception

Though this issue is addressed to some extent by improved Exception handling in JDK 7 by introducing automatic resource management or ARM blocks and allowing to catch multiple Exception in same catch block. That's all on the difference between runtime exception and checked in Java. Unchecked means compiler doesn't check and Checked means compiler checks for exception handling.

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Labels: core java , core java interview question answer , exception. It compiles fine, but it throws ArithmeticException when run. The compiler allows it to compile because ArithmeticException is an unchecked exception. Skip to content. Change Language. Related Articles. Basics of Java. Operators in Java. Packages in Java. Flow Control in Java. Loops in Java. Jump Statements in Java. Please verify if what I understood is correct or not. Thanks a lot! Campbell Ritchie. SG: Welcome to the Ranch Don't say runtime exception.

Say unchecked exception, because this isn't a RuntimeException but it is an unchecked exception. All exceptions occur at runtime; the name RuntimeException was chosen because it represents exceptions whose origin is entirely inside the runtime as opposed to something like an IOException which might originate outside the runtime, e.

It was thought that it will not be possible to cure RuntimeExceptions by simply running the code again, which is why they are all unchecked. Apart from that, you are correct The compiler checks whether checked exceptions have been handled and will fail to compile the code if any have been forgotten about.

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