EXCEPTIONS

1. When Exception is thrown, the finally block is executed always before the exception is propagated.

See the following example:

try {
   System.out.println("TRY-START");
   method_that_throws_runtime_exception();
   System.out.println("TRY-STOP");
} finally {
    System.out.println("FINALLY");
}

the result is: TRY-START   FINALLY and then the information about the runtime exception.
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2. One more thing regarding above scenario. Please, look at this example:


try {
   System.out.println("TRY-START");
   method_that_throws_runtime_exception();   /e.g. NullPointerException
   System.out.println("TRY-STOP");
} finally {
    System.out.println("FINALLY"); 
    throws new Exception();
}

The propagated exception is Exception not NullPointerException!
And the result is: TRY-START FINALLY information about Exception.



When the catch block handles exception:


try {
   System.out.println("TRY-START");
   method_that_throws_runtime_exception();   /e.g. NullPointerException
   System.out.println("TRY-STOP");
} catch (Exception e) {
    throws new Exception();
} finally {
    System.out.println("FINALLY");
}

The propagated exception is Exception not NullPointerException!
And the result is: TRY-START FINALLY information about Exception.

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3. It is correct:
 
   void method() throws FileNotFoundException {}
   
   but this one is incorrect:
 
   try {
   } catch (FileNotFoundexception e) {
   }