Switch case won't work with my while loop?

Question

hey im a very rookie coder, and i was trying to create an average calculator program. However once I use this code, it skips my switch case and goes immediately to my default case. How can I fix this?

import java.util.*;

class AverageCalculator {
    public static void main(String[] args) {
        Scanner ramim = new Scanner(System.in);
        int totalToAverage;
        int counter = 1;
        int ans;
        String ans2;
        int tally = 0;

        System.out.print("How many different inputs do you want to put in?: ");
        totalToAverage = ramim.nextInt();
        System.out.println("Your input # is " + totalToAverage + ".");

        while (counter <= totalToAverage) {
            System.out.print("Enter number " + counter + ":");
            counter++;
            ans = ramim.nextInt();
            tally = ans + tally;
        }

        System.out.println("You have entered " + --counter + " numbers." + "Your total is " + tally + ".");

        System.out.println("Would you like to find your average?");
        ans2 = ramim.nextLine();

        switch (ans2) {
        case "yes":
            System.out.println("note: dont worry about this part yet");
            break;

        case "no":
            System.out.println("Alright.");
            break;

        default:
            System.out.println("Please enter yes or no only. :)");
            break;
        }
    }
}

score 0 · Answer 1 · answered Apr 08 '18 at 20:42

0

You need to use ramim.nextLine(); twice to get String input after getting int input. This is because ramim.nextInt(); does not read the last ENTER character you type. So do something like:

System.out.println("Would you like to find your average?");
ramim.nextLine();
ans2 = ramim.nextLine();

answered Apr 08 '18 at 20:42

Raymo111

387
3
21

1

When code behaves as per its contract, it's not a bug. – Bohemian Apr 08 '18 at 20:46
Just realized that. Fixed it. – Raymo111 Apr 08 '18 at 20:46
1

Not a bad answer, but if you see a question like this it's worth trying to find a duplicate to flag it as instead of writing an answer - saves you time, and means you can write answers to more interesting questions. – hnefatl Apr 08 '18 at 20:47
@hnefatl Meh, need the reputation from accepted and upvoted answers. – Raymo111 Apr 08 '18 at 20:48
@Ivar Please explain. – Raymo111 Apr 08 '18 at 20:50
@Ivar Okay then. Should I delete the answer? – Raymo111 Apr 08 '18 at 20:54
@Ivar Should I then do something like my comment for [this question](https://stackoverflow.com/questions/49722653/java-knapsack-nullpointerexception)? – Raymo111 Apr 08 '18 at 20:55
@Ivar I did write that myself. Can't flag as duplicate because daily limit is 10 and I've used those already. – Raymo111 Apr 08 '18 at 20:58
Let us [continue this discussion in chat](https://chat.stackoverflow.com/rooms/168510/discussion-between-raymo111-and-ivar). – Raymo111 Apr 08 '18 at 21:01

Switch case won't work with my while loop?

1 Answers1