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Thread: Help with some loop in java

  1. #1
    Junior Member
    Join Date
    Sep 2019
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    Default Help with some loop in java

    Hi, I'm a beginner in java I try to write a while loop how I can choose when I want to leave It, I write that :

    int z=0;
    client c1= new client("roger");
    labelK:while(z!=1) {

    System.out.print("Votre nom et v?tre pr?nom? \n");
    String st=sc.nextLine();

    System.out.println("Voulez-vous continuer ?");
    int rts = sc.nextInt();

    if(rts !=1) {
    break labelK;
    My probleme is when I want to remake a loop (when I have to write rts=1), it skip automaticly String st=sc.nextLine(); and I don't know why the second time is different from the first one

  2. #2
    Super Moderator Norm's Avatar
    Join Date
    May 2010
    Eastern Florida
    Thanked 2,465 Times in 2,416 Posts

    Default Re: Help with some loop in java

    Can you copy the program's output from the command prompt window and paste it here so we can see what you are talking about?
    Also add some comments to the print out describing the problem: <<<<< Here it should ...

    The loop has two variables that are used to control its looping: z and rts
    That is confusing. Can you change the logic so that only 1 variable is used?

    Please edit your post and wrap your code with code tags:


    to get highlighting and preserve formatting.

    it skip automaticly String
    There is a problem with using nextInt followed by nextLine. nextInt leaves the line-end character in the Scanner's buffer. nextLine will return that line-end character as an empty line.
    The solution is to call nextLine after calling nextInt to clear the line-end character.
    If you don't understand my answer, don't ignore it, ask a question.

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