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Thread: java.util.NoSuchElementException: null (in java.util.Scanner) Need help please?

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    Super Moderator Norm's Avatar
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    Default Re: java.util.NoSuchElementException: null (in java.util.Scanner) Need help please?

    What line does the error happen on? Please post the full text of the error message.

    The NoSuchElementException error is from a Scanner method that tried to read and didn't find anything.


    One problem I see is that hasNext() is not called before every call to next()
    If you don't understand my answer, don't ignore it, ask a question.


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    Default Re: java.util.NoSuchElementException: null (in java.util.Scanner) Need help please?

    The error happens on line 35. The full error message is:

    java.util.NoSuchElementException
    at java.util.Scanner.throwFor(Scanner.java:907)
    at java.util.Scanner.next(Scanner.java:1416)
    at Capitals.main(Capitals.java:35)

    and then in my code editor it brings up

    java.util.NoSuchElementException:
    null (in java.util.Scanner)


    I had read that somewhere else, but the information is still being displayed so now I'm just confused.
    ---------

    does having a hasNext() before the brackets there on line 29, not solve that problem? I guess I just assumed it would cover everything in the brackets :S

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    Default Re: java.util.NoSuchElementException: null (in java.util.Scanner) Need help please?

    Im doing the same assignment, same error

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    Default Re: java.util.NoSuchElementException: null (in java.util.Scanner) Need help please?

    Yeah I saw your post before and realised we must have been doing the same assignment. Im just so confused, i don't know how to fix it D:

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    Default Re: java.util.NoSuchElementException: null (in java.util.Scanner) Need help please?

    The hasNext() method tests if there is one line available to be read. The code then tries to read 3 lines without testing if there are 2 more lines available after the one.

    The code should check if there is a line available by calling hasNext() before every call to next().
    If you don't understand my answer, don't ignore it, ask a question.

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