一道java面试题-方法静态分派

一道面试题，以下程序的输出是？

public class StaticDispatch {
	static abstract class Human{
	}
	static class Man extends Human{
	}
	static class Woman extends Human{
	}
	public void sayHello(Human guy){
		System.out.println("hello , guy!");
	}
	public void sayHello(Man guy){
		System.out.println("hello, gentleman!");
	}
	public void sayHello(Woman guy){
		System.out.println("hello, lady!");
	}
	
	public static void main(String[] args) {
		Human man = new Man();
		Human woman = new Woman();
		StaticDispatch sd = new StaticDispatch();
		sd.sayHello(man);
		sd.sayHello(woman);
	}
}public class StaticDispatc