public class ArithmeticOperations { double piValue = 3.14; static final double PI_VALUE = 3.14; public static void main(String[] args) { ArithmeticOperations arithmeticOperations = new ArithmeticOperations(); int result = arithmeticOperations.sum(20, 5); System.out.println(result); } public int sum(int num1, int num2) { subtract(num1, num2); addition(num1, num2); int result = num1 + num2; return result; } public int subtract(int num1, int num2) { int result = num1 - num2; return result; } public static int addition(int num1, int num2) { int result = num1 + num2; return result; } }