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Thread: double

  1. #1
    isme is offline Member
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    Default double

    im getting null pointer exception for the code below

    double volume = volumeToCompare.getTime();
    any idea how to avoid the null pointer exception?

  2. #2
    gcalvin is offline Senior Member
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    Make sure volumeToCompare exists before you call one of its methods.

    You haven't presented enough code to allow us to be more helpful than that.

    -Gary-

  3. #3
    isme is offline Member
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    yes, already declared. here's how it really goes:

    volumeToCompare = time.getCurrentDateTime();
    double volume = volumeToCompare.getTime();

  4. #4
    gcalvin is offline Senior Member
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    And what is time? What exactly does your null pointer error message say? We need more code to put this in context.

    -Gary-

  5. #5
    Tolls is offline Moderator
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    Yes, what does getTime() return?
    Is it, by any chance, a Double and not a double?

  6. #6
    1060406004020 is offline Member
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    Default

    what's volumeToCompare?

  7. #7
    DarrylBurke's Avatar
    DarrylBurke is offline Forum Police
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    volumeToCompare = time.getCurrentDateTime();
    double volume = volumeToCompare.getTime();
    Did anyone ever tell you about using meaningful variable names? On the face of it, assigning the return value of getCurrentDateTime() to a variable volumeToCompare is absurd, and setting volume to the return value of getTime() is equally bad.

    db

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