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Thread: FileNotFoundException via Scanner

  1. #1
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    Default FileNotFoundException via Scanner

    Hello,

    This block of code:

    public Member parseFile(String file_loc) throws FileNotFoundException{
    File memberFile = new File(file_loc);
    LinkedList stackList = new LinkedList();
    Scanner s = new Scanner(memberFile);
    while (s.hasNextLine()){
    stackList.addLast(s.nextLine());
    }

    Produce this error:

    java.io.FileNotFoundException: PA1-exampleData (The system cannot find the file specified)
    at java.io.FileInputStream.open(Native Method)
    at java.io.FileInputStream.<init>(Unknown Source)
    at java.util.Scanner.<init>(Unknown Source)
    at a1.InformationParser.parseFile(InformationParser.j ava:37)

    PA1-exampleData is a file that is passed to this procedure (within the class InformationParser) through the main of another class.

    I am executing this is the same directory of the file yet the error indicates that the it cannot find the file.

    This error occurs on line 37 of InformationParser, at the line reading " Scanner s = new Scanner(memberFile); ".

    Am I missing something here?


  2. #2
    Super Moderator Sean4u's Avatar
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    Default Re: FileNotFoundException via Scanner

    You can use File.getAbsolutePath() to get the full path the JVM will use to locate the file. Print the absolute path out just before the error happens. Is it what you expect?

  3. #3
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    Default Re: FileNotFoundException via Scanner

    Adding System.out.println(memberFile.getAbsolutePath()); before the error causes it to display the same error message, but no path is printed before it occurs. Odd.

  4. #4
    Super Moderator Sean4u's Avatar
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    Default Re: FileNotFoundException via Scanner

    Did you check the line numbers in the Exception? If you added a line and compiled your code the line numbers should at least have increased by 1.

  5. The Following User Says Thank You to Sean4u For This Useful Post:

    mtn_student (August 31st, 2011)

  6. #5
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    Default Re: FileNotFoundException via Scanner

    Yes, the error now happens on line 38 instead of line 37.

  7. #6
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    Default Re: FileNotFoundException via Scanner

    Maybe you should change that line to:
    System.out.println("****\n\n\n****LOOKIT THIS FILE!!!! '" + memberFile.getAbsolutePath() + "' ****\n\n\n\n    **** CAN YOU SEE ME NOW?????\n\n\n\n****");
    There's always a chance that getAbsolutePath() is returning something very short.

  8. #7
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    Default Re: FileNotFoundException via Scanner

    Nevermind, I just found out that I'm in the wrong directory. Thumbsup for Sean4u anyway

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