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  1. #1
    Dex is offline Member
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    Mar 2012
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    Default First time Scanner Help

    Hey guys this is my first time using scanners and I was wondering how you would scan something from a text file that is within a nested for loop.

    Java Code:
    for (int i=0; i <ROWS; i++) {
            for (int j=0; j < COLS; j++) {
              if (twoDArray[i][j] == null) {
                pW.println("null");  // how would i scan this line 
              } else {
                pW.println(cards[i][j].getCardStatusInformation()); // and this line
    I think I already understand some of the basics of scanning, e.g

    Java Code:
    pW = new PrintWriter(fileName);
    could be scanned by:

    Java Code:
     scan = new Scanner(fileName);
        WidthOfWall = scan.nextInt();
    I hope this made sense, thanks.

  2. #2
    Junky's Avatar
    Junky is offline Grand Poobah
    Join Date
    Jan 2011
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    Default Re: First time Scanner Help

    Quote Originally Posted by Dex View Post
    I hope this made sense, thanks.
    Scanner is used for reading data in. PrintWriter is for writing data out. So, no your post doesn't make sense. Btw, using a Scanner inside a nested for loop is exactly the same as using a Scanner inside a single loop or no loop at all for that matter.

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