程序如下,求大侠帮忙,其中涉及到很多细节,构造器的调用顺序,内部类什么的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 {
private static Test monitor = new Test();
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();
}
} 运行结果如下:
Egg2.Yolk()
New Egg2()
Egg2.Yolk()
BigEgg2.Yolk()
BigEgg2.Yolk.f()求大侠帮忙,谢了!
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 {
private static Test monitor = new Test();
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();
}
} 运行结果如下:
Egg2.Yolk()
New Egg2()
Egg2.Yolk()
BigEgg2.Yolk()
BigEgg2.Yolk.f()求大侠帮忙,谢了!
解决方案 »
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