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Thread: Scanner does weird things

  1. #1
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    Default Scanner does weird things

    import java.util.Scanner;
    public class MainClass {
    	static Scanner sc = new Scanner(System.in);
    	public static void main(String[] args) {
    		int input = sc.nextInt();
    		System.out.println("Welcome to the guess game!");
    		System.out.println("Bob and Angela joined the table");
     
    		}
    }


    Dear all,
    I'm trying to make a guess game as a total noob where you guess a word between 0 to 10 and two NPC's who will guess to. If you or one NPC got the number right, you or a NPC win. Else, re-run the program. I got an idea of the code in my head but now this problem occurs. You see that i have declared the scanner, and make the program say the intro. Before the welcoming message I declared the integer that you will guess. But the welcoming message and the message that the NPC's have joined only shows when I type a number. Why is this?
    Now i'm asking anyway, i have no idea how to re-run the program if no-one got it right. I guess i check if anyone won, and then make an else statement. What do I put in the else statement to re-run the program?
    Sorry, English isn't my native language.
    Thanks in advance,
    Niels.


  2. #2
    Super Moderator Norm's Avatar
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    Default Re: Scanner does weird things

    the welcoming message and the message that the NPC's have joined only shows when I type a number
    The computer executes the instructions in the same order that they are in the program.
    The nextInt() method will wait until a user enters an int value
    After the number is read, the println statements will be executed.

    Usually you print a message to the user telling him about what the program wants him to enter BEFORE trying to read his input.
    If you don't understand my answer, don't ignore it, ask a question.

  3. #3
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    Default Re: Scanner does weird things

    do it
    System.out.println("Welcome to the guess game!");
    System.out.println("Bob and Angela joined the table");
    int input = sc.nextInt();

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