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Thread: Regarding File Handling

  1. #1
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    Default Regarding File Handling

    Hi
    I made a project in which i am using 2 files

    1st file contains the path of the programs
    2nd file contains the associated image icon's path

    Now when i want to delete a button (which is using both data from the above files)
    At that time it is easy to delete the program path from 1st file

    But it is difficult for me to delete the icon's path from 2nd file as 2nd file may contain same image icon like others so how can overcome such a problem

    1st File

    .../a.exe
    .../b.exe
    .../c.exe

    2nd File

    ../a.png
    ../a.png
    ../a.png

    Now i want to delete the button that is present in ../b.exe
    I can delete it from 1st File
    but how should i delete from 2nd file?
    Can you provide me a snippet so that it will be easy for me to understand
    Thanks in advance


  2. #2
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    Default Re: Regarding File Handling

    I'm guessing your algorithm works on the assumption that each line in file1 corresponds to that same line in file 2 ..? (In other words, line 1 in file 1 should be the same item (aka: program&icon) as line 1 in file 2....)

    In which case, you could simply perform a string check against each line of file 2 to make sure that they end with the "[filename]" (minus the ".exe" and replace with ".png"), and only remove that line (or rather, exclude it from being re-written) if it matches the item you want to delete.

    So for example...
    String itemYouWishToDelete = "item.exe"; //     <-- What ever you've clicked on...
    File file2 = new File("file2.txt");
    Scanner scanner = new Scanner(file2);
    while (scanner.hasNextLine()){
            String line = scanner.nextLine();
            if (line.endsWith(itemYouWishToDelete.replace(".exe",".png"))) {
                // delete the item
            }
    }

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