making a simple calculator using functions (Java) (200)

package com.company;
import java.util.Scanner;
public class Program37 {
    static  int sum(int a, int b)
    {
        int sum;
        sum=a+b;
        return sum;
    }
    static  int sub(int a, int b)
    {
        int sub;
        sub=a-b;
        return sub;
    }
    static  float div(int a, int b)
    {
        int div;
        div=a/b;
        return div;
    }
    static  int mul(int a, int b)
    {
        int mul;
        mul=a*b;
        return mul;
    }
    public static void main(String[] args) {
        Scanner p = new Scanner(System.in);
        System.out.println("please enter a first number:");
        int x=p.nextInt();
        System.out.println("please enter a second number:");
        int y=p.nextInt();
        int c;
        c=sum(x, y);
        System.out.println("sum is");
        System.out.println(c);
        System.out.println("sub is");
        System.out.println(sub(x,y));
        System.out.println("div is");
        System.out.println(div(x,y));
        System.out.println("mul is");
        System.out.println(mul(x,y));
    }
}