package mianshi; public class Body implements Cloneable{ public Head head; public Body() {} public Body(Head head) {this.head = head;} @Override protected Object clone() throws CloneNotSupportedException { Body newBody = (Body) super.clone(); newBody.head = (Head) head.clone(); return newBody; } static class Head implements Cloneable{ public Face face; public Head() {} public Head(Face face){this.face = face;} @Override protected Object clone() throws CloneNotSupportedException { //return super.clone(); Head newHead = (Head) super.clone(); newHead.face = (Face) this.face.clone(); return newHead; } } static class Face implements Cloneable{ @Override protected Object clone() throws CloneNotSupportedException { return super.clone(); } } public static void main(String[] args) throws CloneNotSupportedException { Body body = new Body(new Head(new Face())); Body body1 = (Body) body.clone(); System.out.println("body == body1 : " + (body == body1) ); System.out.println("body.head == body1.head : " + (body.head == body1.head)); System.out.println("body.head.face == body1.head.face : " + (body.head.face == body1.head.face)); } }
body == body1 : false body.head == body1.head : false body.head.face == body1.head.face : false