CODEWITHSUNDEEP
java
stefania
stefania

Reputation: 7

SOLVED Anyway to do this without creating another scanner in the method?

I just started learning how to write programs. I heard it is a bad habit to create multiple scanners in one file. How do I change this code so that I don't have to put a scanner inside the "adding" method?

import java.util.Scanner;

public class Note1014{
    public static void main (String[]args){

    Scanner scn = new Scanner(System.in);   
    int choice = 0;
    do{
        System.out.println("Please select from the following options:");
        System.out.println("1. Compare two values");
        System.out.println("2. Add a list of values");
        System.out.println("3. Create a shopping list");
        choice = scn.nextInt();

        if(choice == 2){
            adding(1);
        }

    }while(choice <4);  
    }

    public static void adding (int enter){
    Scanner scn = new Scanner(System.in);
    int price =0;
    int i = 0;
    while(i==0){
    System.out.println("enter price, press -1 when done");
    enter = scn.nextInt(); 
    price += enter;

    if(enter == -1){
        System.out.println("Your total is " + price);
        break;
    }
    }
    }
}

Thanks!

Upvotes: 0

Views: 147

Answers (2)

SUX
SUX

Reputation: 900

like this

import java.util.Scanner;

public class Note1014 {
static Scanner scn = new Scanner(System.in);
    public static void main(String[] args) {


        int choice = 0;
        do {
            System.out.println("Please select from the following options:");
            System.out.println("1. Compare two values");
            System.out.println("2. Add a list of values");
            System.out.println("3. Create a shopping list");
            choice = scn.nextInt();

            if (choice == 2) {
                adding(1);
            }

        } while (choice < 4);

    }

    public static void adding(int enter) {

        int price = 0;
        int i = 0;
        while (i == 0) {
            System.out.println("enter price, press -1 when done");
            enter = scn.nextInt();
            price += enter;

            if (enter == -1) {
                System.out.println("Your total is " + price);
                break;
            }
        }
    }
}

also you have a small problem it should be

if(enter !=-1)
price += enter;

Upvotes: 1

thewritingdev
thewritingdev

Reputation: 1

You can create the object outside the main method but inside the class and then use the same scn object inside the class as many times you want.

Upvotes: 0

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