Thread: REQUEST : Making a Basic program which creates two method and calls them in main method

Write a program which adds or subtract two number
here are condition:-
1. make a method which will add two no.
2. make a method which subtract the two no.
3. ask user if they wanna add or subtract and then call the method needed as per need
i am deeply confused and will really appreciate anyone who will make this basic script from which i can observe my mistake
here is my code for reference if you need but it is not working

import java.util.Scanner;
public class sum {
	static Scanner input = new Scanner(System.in);
	public static double addition(double s1 ,double s2 ) {
		double sum1 = s1 + s2;
		return sum1;
	}
    public static double subtraction(double s1, double s2) {
double sum1 = s1-s2;
return sum1;
}
    public static void main(String args[])
{
	double n1, n2, sum;
	System.out.println("welcome do you want to add or divide");
	String s = input.next();
	if (s.equalsIgnoreCase("add") || (s.equalsIgnoreCase("addition")))
			{
		System.out.println("enter the two numbers");
		n1 = input.nextDouble();
		n2 = input.nextDouble();
		 sum = addition(n1, n2);
		System.out.println(sum);
	}
	else if (s.equalsIgnoreCase("minus") || (s.equalsIgnoreCase("subtraction")))
	{
		System.out.println("enter the two numbers");
		n1 = input.nextDouble();
		n2 = input.nextDouble();
		 sum = subtraction(n1, n2);
		System.out.println(sum);
	}
 
}
}

hello thanks for the response this thread has been solved, genuinely appreciate the answers
I don't really know how to mark this thread as solved so I am just gonna leave it this way