What is the use of the finally block? Is finally block in Java guaranteed to be called? When finally block is NOT called?

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Finally is the block of code that executes always. The code in finally block will execute even if an exception is occurred. Finally block is NOT called in following conditions

  • If the JVM exits while the try or catch code is being executed, then the finally block may not execute. This may happen due to System.exit() call.
  • if the thread executing the try or catch code is interrupted or killed, the finally block may not execute even though the application as a whole continues.
  • If a exception is thrown in finally block and not handled then remaining code in finally block may not be executed.