Egg2.Yolk() //父类中的成员变量Yolk y=new Yolk();初始化
New Egg2() //父类初始化
Egg2.Yolk() //insertYolk(new Yolk())执行,执行父类Yolk的初始化
BigEgg2.Yolk.f()//子类Yolk初始化
BigEgg2.Yolk.f()//e2.g();
New Egg2() //父类初始化
Egg2.Yolk() //insertYolk(new Yolk())执行,执行父类Yolk的初始化
BigEgg2.Yolk.f()//子类Yolk初始化
BigEgg2.Yolk.f()//e2.g();
New Egg2() //父类初始化
Egg2.Yolk() //insertYolk(new Yolk())执行,执行父类Yolk的初始化
BigEgg2.Yolk.f()//子类Yolk初始化
BigEgg2.Yolk.f()//e2.g();
其实里面讲得很清楚的