Core Java: 继承覆盖时的一个问题

看如下Java代码:

public class Main {	

	public static void main(String[] args) {

		Person person = new Student();		

		System.out.println("Name: "+person.getName()); // --> Guess

		person.setName("set outside");		

		System.out.println("After Name: "+person.getName()); // --> Guess

		Student student = (Student)person;		

		System.out.println("After cast, Name: "+student.getName()); // --> Guess

	}

}

class Person {

	private String name = "Person name";	//  --> (A)

	public void setName(String name) {

		this.name = name+"_ in superClass";

	}

	public String getName() {

		return this.name;

	}

}

class Student extends Person{

	private String name = "Student name";	 // --> (B)

	public void setName(String name) {

		this.name = name + "_ in subClass";

	}

	/*

	public String getName() {  --> (C)

		return this.name;

	}

	*/

}

    运行先猜下三个输出是什么? 接着做如下改动再猜结果: 把(A)处的private改为protected, 把(B)处一行注释掉, 把 (C)处的方法放开.

 

   运行结果怎么? 为什么?