Java0715/lesson/src/com/sf/Main10.java

package com.sf;

public class Main10 {

    static void sayHello(Human human) {
        System.out.println("sayHello Human");
    }

    static void sayHello(Man man) {
        System.out.println("sayHello Man");
    }

    static void sayHello(Woman woman) {
        System.out.println("sayHello Woman");
    }

    public static void main(String[] args) {
        // 编译时类型  运行时类型
        Human man = new Man();
        Human woman = new Woman();
        sayHello(man);
        sayHello(woman);
        // 对重载方法的选择 是根据编译时类型（静态类型）来确定的 而不是根据运行时类型
        // A Human Human
        // B Man Woman
    }
}

class Human {
}

class Man extends Human {
}

class Woman extends Human {
}