DynamicDispatch.java

package com.brianway.learning.java.jvm.methodinvoke;

/**
 * Created by brian on 17/3/20.
 * 方法动态分派演示
 */
public class DynamicDispatch {
    static abstract class Human {
        protected abstract void sayHello();
    }

    static class Man extends Human {
        @Override
        protected void sayHello() {
            System.out.println("man say hello");
        }
    }

    static class Woman extends Human {
        @Override
        protected void sayHello() {
            System.out.println("woman say hello");
        }
    }

    public static void main(String[] args) {
        Human man = new Man();
        Human woman = new Woman();
        man.sayHello();
        woman.sayHello();

        man = new Woman();
        man.sayHello();
    }
}

/*
man say hello
woman say hello
woman say hello
 */