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Thread: "\b" not "back spacing"?

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    Question "\b" not "back spacing"?

    Correct me if I'm wrong here but \b is supposed to remove the last letter in a string like \n is supposed to go to a new line.

    For what ever reason \b is not backspacing but instead my a character ""

    heres my code:
    System.out.print("This is a test.\b\n");

    what i expect the out print to be is
    This is a test
    but instead i get:
    This is a test.

    I don't really see what I am doing wrong here.


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    Default Re: "\b" not "back spacing"?

    the character its out printing is binary.png for some reason it didnt post it.

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    Default Re: "\b" not "back spacing"?

    What happens when you have control characters being displayed by a program is up to the program.
    Each program can do its own thing when it reads and displays a control character.

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    Default Re: "\b" not "back spacing"?

    so how would I make it read \b and know to remove one character back?

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    Super Moderator Norm's Avatar
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    Default Re: "\b" not "back spacing"?

    how would I make it read \b
    What is the "it"?
    You could write a method that takes a String as input, scans for the \b character and does some substrings to create a new String with the \b and the character removed.

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    Default Re: "\b" not "back spacing"?

    You could override printwriter and then set the System.out, although it seems like a lot of effort for not very much gain.

    EG:

    import java.io.PrintWriter;
     
    public class PrintWriter2 extends PrintWriter
    {
      public PrintWriter2(OutputStream out)
      {
         super(out);
      }
      @Override
      public void print(String mes)
      {
         //Modify the message however you like
         super.print(mes);
      }
    }

    Then in the main method

    PrintWriter newPrintWriter = new PrintWriter2(System.out);
    System.setOut(newPrintWriter);

    Edit, Norm's method might be better.

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    Default Re: "\b" not "back spacing"?

    alright i got it working thanks

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