package com.mycompany.test;

public class Calculator {

	public static void main(String[] args) {
        int a = 4;
		int b = 2;
		System.out.println(sum(a,b));
        System.out.println(minus(a,b));
	}

    private static int sum(int a, int b){
        return a + b;
    }
    
    private static int minus(int a, int b) {
		return a - b;
	}


}

@@ -195,16 +195,56 @@
 (a,b));%0A
+        System.out.println(multi(a,b));%0A
 %09%7D%0A%0A    
@@ -313,13 +313,9 @@
   %7D%0A
-    
 %0A
+
     
@@ -375,11 +375,75 @@
  b;%0A%09%7D%0A%0A
+    private static int multi(int a, int b) %7B%0A%09%09return a * b;%0A%09%7D%0A
 %0A%7D%0A

Add mul function