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
转载于:https://my.oschina.net/itfanr/blog/195709