您所在位置：主题：[求助]输出的结果怎么回事？初始化顺序？
mengxin0704
[专家分：0] 发布于 2009-03-08 15:17:00
class Egg2
{
protected class Yolk
{
public Yolk(){System.out.println("Egg2.Yolk");}
public void f(){System.out.println("Egg2.Yolk.f()");}
}
private Yolk y = new Yolk();
public Egg2(){System.out.println("New Egg2()");}
public void insertYolk(Yolk yy){y = yy;}
public void g(){y.f();}
}
public class BigEgg2 extends Egg2
{
public class Yolk extends Egg2.Yolk
{
public Yolk(){System.out.println("BigEgg2.Yolk()");}
public void f(){System.out.println("BigEgg2.Yolk.f()");}
}
public BigEgg2(){insertYolk(new Yolk());}
public static void main(String[] args)
{
Egg2 e2 = new BigEgg2();
e2.g();
}
}
输出：
Egg2.Yolk
New Egg2()
Egg2.Yolk
BigEgg2.Yolk()
BigEgg2.Yolk().f()
{
protected class Yolk
{
public Yolk(){System.out.println("Egg2.Yolk");}
public void f(){System.out.println("Egg2.Yolk.f()");}
}
private Yolk y = new Yolk();
public Egg2(){System.out.println("New Egg2()");}
public void insertYolk(Yolk yy){y = yy;}
public void g(){y.f();}
}
public class BigEgg2 extends Egg2
{
public class Yolk extends Egg2.Yolk
{
public Yolk(){System.out.println("BigEgg2.Yolk()");}
public void f(){System.out.println("BigEgg2.Yolk.f()");}
}
public BigEgg2(){insertYolk(new Yolk());}
public static void main(String[] args)
{
Egg2 e2 = new BigEgg2();
e2.g();
}
}
输出：
Egg2.Yolk
New Egg2()
Egg2.Yolk
BigEgg2.Yolk()
BigEgg2.Yolk().f()
