This is one of my favourite interview questions – I’m often surprised by the number of candidates who get this wrong. Let’s see how you do.
What’s the difference between the following code snippets?
The answer is that the first snippet destroys the stack trace for the exception while the second snippet keeps it intact. This can be a real pain when trying to track down a specific issue – in this case the log files will point you to the line of code where you are re-throwing the exception instead of the line where the original exception occurs. So always use the second code snippet.