Re: small java exercise

From:
Lew <lew@nospam.lewscanon.com>
Newsgroups:
comp.lang.java.programmer
Date:
Thu, 17 May 2007 11:30:25 -0400
Message-ID:
<Jd2dnXBJreqM6NHbnZ2dnUVZ_v_inZ2d@comcast.com>
tjmadden1128@gmail.com wrote:

I've never tried, but what would happen if a return was done inside a
try/finally block?

public class Foo {
  private int pg=13;
  private int r = 18;
   public boolean Rating(int age) {
      try {
           if (age > r) {
               return true;
           }
      }
      finally { return false; }
    }
}

Contrived example: not real code.


For this we turn to the JLS, ss. 14.20.2:
<http://java.sun.com/docs/books/jls/third_edition/html/statements.html#14.20.2>

A try statement with a finally block is executed by first executing the try block. Then there is a choice:
...
    * If execution of the try block completes abruptly for any other reason R, then the finally block is executed. Then there is a choice:
          o If the finally block completes normally, then the try statement completes abruptly for reason R.
          o If the finally block completes abruptly for reason S, then the try statement completes abruptly for reason S (and reason R is discarded).


The finally return supersedes the try return.

--
Lew

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