About Question enthuware.ocajp.i.v7.2.1034 :

Help and support on OCA OCP Java Programmer Certification Questions
1Z0-808, 1Z0-809, 1Z0-815, 1Z0-816, 1Z0-817

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ETS User

About Question enthuware.ocajp.i.v7.2.1034 :

Post by ETS User »

Hi

For this question, I'm not sure the StackOverFlowError for the factorial function is right.

I think a recursive factorial function has to run a lot more than the capacity of int to generate a StackOverFlow.

Could you look into this please?

Thank you.

admin
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Re: About Question enthuware.ocajp.i.v7.2.1034 :

Post by admin »

The given question and answer are correct. It will throw java.lang.StackOverflowError for large integer values.

You are probably confusing Arithmetic overflow with Stack overflow. Both are different things.

HTH,
Paul.
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Guest

Re: About Question enthuware.ocajp.i.v7.2.1034 :

Post by Guest »

Hi sorry about that, I just realised that after putting in the question. But I was going to bed (got very less sleep before my exam), so couldn't correct the question.

Yeah I was actually confused it with Arithmetic overflow. While going to sleep is when I realised that 1000's of recursion itself could cause stack overflow, so yeah the answer is valid.

Anyway I gave my OCA exam today and passed. Thanks a lot to enthuware. :)

Thanks
Sreeju

Quadro
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Re: About Question enthuware.ocajp.i.v7.2.1034 :

Post by Quadro »

The following snippet will throw ArraIndexOutOfBoundsException, not NullPointerException as marked correct answer:

Code: Select all

void printMe(Object[] oa) {
    for(int i = 0; i <= oa.length; i++) {
        System.out.println(oa[i]);
    }
}

admin
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Re: About Question enthuware.ocajp.i.v7.2.1034 :

Post by admin »

No, it is correct. You probably overlooked the statement: Assume that it is called as such: printMe(null)
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se.le7204
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Re: About Question enthuware.ocajp.i.v7.2.1034 :

Post by se.le7204 »

I just had a small point. If the question states "Identify the exceptions that will be received..." Wouldn't StackOverFlowError be an invalid answer since it is technically not an exception?

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Re: About Question enthuware.ocajp.i.v7.2.1034 :

Post by admin »

The following convention is used in the exam:
"exception" with lower case e, as in "exception handling", refers to all kinds of exceptions i.e. all Throwables (Exception, Errors, RuntimeException and so on).
"Exception" with upper case E refers to java.lang.Exception.
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