Question

I am supposed to make a program that only has 2 methods. One method gets input from the user. The other method determines whether the triangle is Scalene, Isosceles or Equilateral. I have to then return the result back as a string to the original method (this is the part I am having trouble with). I don’t have a teacher I am just doing stuff from a booklet. Any help would be appreciated.

import java.util.Scanner;
public class Triangle {
  
    public static void main (String args[]){
        // Input for lengths
        Scanner one = new Scanner(System.in);
        double sideone;
        System.out.println("Enter side one:");
        sideone = one.nextDouble();
            
        Scanner two = new Scanner(System.in);
        double sidetwo;
        System.out.println("Enter side two:");
        sidetwo = two.nextDouble();
            
        Scanner three = new Scanner(System.in);
        double sidethree;
        System.out.println("Enter side three:");
        sidethree = three.nextDouble();
        sides(sideone, sidetwo, sidethree);
    }
    
    
    static void sides(double sideone, double sidetwo, double sidethree){
        
        if ((sideone == sidetwo) && (sideone == sidethree)){
           System.out.println("The triangle is Equilateral");
        }
            
        if (((sideone == sidetwo) || (sideone == sidethree) || (sidetwo == sidethree)))
        {
           System.out.println("The triangle is Isosceles");
        }
            
        else{ 
           System.out.println("The triangle is Scalene");  
        }
            
        return; 
        }
  
}

Answer 1

I have to then return the result back as a string to the original method (this is the part I am having trouble with).

You need to change the method’s return type from void (nothing) to String, and then use “return” to return the result:

static String sides(double sideone, double sidetwo, double sidethree){

    if ((sideone == sidetwo) && (sideone == sidethree)){
         return "The triangle is Equilateral";
    }

You can then call it from you main method to get the result:

String theResult = sides(sideone, sidetwo, sidethree);