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Thread: Exception in thread "main" java.lang.NullPointerException

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    Default Exception in thread "main" java.lang.NullPointerException

    Pls help me i got this message when i compile my program


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    Default Re: Exception in thread "main" java.lang.NullPointerException

    got this message when i compile my program
    That is a very unusual error message to get when compiling a program.
    Normally you only get that error when executing a program.

    Please copy the full text of the error message and paste it here.
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: Exception in thread "main" java.lang.NullPointerException

    Hi , at compile time it can not rise. whenever performing the any operations on null values it may be rise at run time.

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    Default Re: Exception in thread "main" java.lang.NullPointerException

    Yes, you are right, the error occurs during run time. The output shows
    "Exception in thread "main" java.lang.NullPointerException
    at javax.swing.ImageIcon.<init>(ImageIcon.java:205)
    at Login.<init>(Login.java:38)
    at Login.main(Login.java:100)
    Java Result: 1
    BUILD SUCCESSFUL (total time: 1 second)"

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    Super Moderator Norm's Avatar
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    Default Re: Exception in thread "main" java.lang.NullPointerException

    "Exception in thread "main" java.lang.NullPointerException
    at javax.swing.ImageIcon.<init>(ImageIcon.java:205)
    at Login.<init>(Login.java:38)
    There is a variable with a null value at line 38 where the code is trying to create an ImageIcon.
    Check the code and make sure the variable does not have a null value there.
    If you don't understand my answer, don't ignore it, ask a question.

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