gistfile1.hpp

public class Bench {
    static int i;
    static class A {
        void perform() {
            i++;
        }
    }
    
    static class B extends A{
        void perform() {
            i += 4;
        }
    }

    public static void main(String[]args) { 
        for(int iter=0; iter<10; iter++) bench();
        System.out.println(i);
    }

    static void bench() {
        long t = System.currentTimeMillis();
        A a = new A();
        A b = new B();
        for (int i=0;i<400000000;i++) {
            A x = (i & 1) == 0 ? a : b;
            x.perform();
        }
        System.out.println(System.currentTimeMillis() - t);
    }
}