java类的继承常见面试题

1.

package com.duapp.itfanr;

class Atom {

	Atom() {
		System.out.println("i am atom");

	}
}

class Rock extends Atom {

	Rock() {

		System.out.println("i am Rock");
	}
}

class Moutain extends Rock {

	Moutain() {
	System.out.println("i am moutain");
	}

}

public class MainTest {

	public static void main(String[] args) {

		new Moutain();
	}

}

结果：

i am atom
i am Rock
i am moutain