CODEWITHSUNDEEP
javaexception
alwayscurious
alwayscurious

Reputation: 1165

Exception Handling Ordering

Why is the stack trace Exception in thread "main" java.lang.ArithmeticException: 3 and not Exception in thread "main" java.lang.ArithmeticException: 1? Isn't ArithmeticException("1") thrown first?

 try{
        try{
            throw new ArithmeticException("1");
        }finally{
            throw new ArithmeticException("2");
        }
    }finally{
        throw new ArithmeticException("3");
    }

Upvotes: 1

Views: 85

Answers (1)

Andy Turner
Andy Turner

Reputation: 140328

Yes, the "1" exception is thrown first. However:

Your finallys overwrite the exceptions thrown in the try blocks, so the finally exceptions are the only ones seen by the exception handling code.

Don't throw or return in a finally block, for precisely this reason.

See the description of this problem in Google's Error Prone documentation for a lot more detail.

Upvotes: 4

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