While poking around the questions, I recently discovered the assert keyword in Java. At first, I was excited. Something useful I didn\'t already know! A more
Assertions are to indicate a problem in the code that may be recoverable, or as an aid in debugging. You should use a more destructive mechanism for more serious errors, such as stopping the program.
They can also be used to catch an unrecoverable error before the application fails later in debugging and testing scenarios to help you narrow down a problem. Part of the reason for this is so that integrity checking does not reduce the performance of well-tested code in production.
Also, in certain cases, such as a resource leak, the situation may not be desirable, but the consequences of stopping the program are worse than the consequences of continuing on.