namespace Demo.Static {
public class MathUtils {
public static int Add(int a, int b) {
return a + b;
}
public static int Multiply(int a, int b) {
return a * b;
}
public static int Calculate(int x, int y) {
int sum = Add(x, y);
int product = Multiply(x, y);
return sum * product;
}
}
public class Service {
public int UseStaticMethods() {
int result1 = MathUtils.Add(5, 3);
int result2 = MathUtils.Multiply(2, 4);
return result1 + result2;
}
public int InstanceMethod(int x) {
return MathUtils.Calculate(x, 10);
}
}
}