Never use return
, break
, continue
, or throw
statements within a finally
block. When program execution enters a try
block that has a finally
block, the finally
block always executes, regardless of whether the try
block (or any associated catch
blocks) executes to normal completion. Statements that cause the finally
block to complete abruptly also cause the try
block to complete abruptly and consequently suppress any exception thrown from the try
or catch
blocks. According to the Java Language Specification, §14.20.2, Execution of try-catch-finally [JLS 2005]:
If execution of the try block completes abruptly for any other reason R, then the finally block is executed. Then there is a choice:
- If the finally block completes normally, then the try statement completes abruptly for reason R.
- If the finally block completes abruptly for reason S, then the try statement completes abruptly for reason S (and reason R is discarded).
...
Bibliography
Puzzle 36. Indecision | |
8.2, Managing Exceptions, The Vanishing Exception | |
[JLS 2005] |
...