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Thread: Why it is not working "CmdLineArgsApp.class"

  1. #1
    Senior Member saneha's Avatar
    Join Date
    Apr 2011
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    Lightbulb Why it is not working "CmdLineArgsApp.class"

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    AOA Sir,

    Here is the message when run the "java CmdLineArgsApp"

    D:\java>java CmdLineArgsApp
    Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 0
    at CmdLineArgsApp.main(CmdLineArgsApp.java:7)

    What is wrong with it?


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  2. #2
    Administrator Vuhelper's Avatar
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    Apr 2011
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    9,578
    When while running CmdLineArgsApp you do not provide any command line arguments you get this exception.

    Because in the code args[0] and args[1] are being used , if we do not provide any argument at command line, args[0] and args[1] do not have any value and exception is generated.

    You can place a check to avoid this exception, you can check for number of element (i.e. check the value of args.length ) in args array if they are greater then 0 then proceed futher.

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