Java编程思想第7章习题

练习4：证明基类构造器，总是会被调用且在导出类构造器之前调用

package com.gzy.think;class Base {    public Base() {        System.out.println("Base");    }}class Derived1 extends Base1 {    public Derived1() {        System.out.println("Derived1");    }}class Derived2 extends Derived1 {    public Derived2() {        System.out.println("Derived2");    }}public class P04 {    public static void main(String[] args) {        new Derived2();    }}

Output:BaseDerived1Derived2