Object.clone的坑

Object.clone只能克隆基本类型,如果里面包含其他的Object的,那么其对象还是只想原来的引用.所以在Clone的时候,内部对象也要克隆,否则就容易出bug

/*******************************************************************************
 * 版权信息：北京中通天鸿武汉分公司
 * @author xuchang
 * Copyright: Copyright (c) 2007北京中通天鸿武汉分公司,Inc.All Rights Reserved.
 * Description:
 ******************************************************************************/
public class Test {
    public static void main(String[] args) throws CloneNotSupportedException {
        Message message = new Message();
        message.setKey("1");
        message.setValue("3");
        SubMessage subMessage = new SubMessage();
        subMessage.setData("hello");
        message.setSubMessage(subMessage);

        Message message1 = (Message) message.clone();
        SubMessage subMessage1 = message1.getSubMessage();
        System.out.println(message1.toString());
        System.out.println(subMessage1.getData());
        subMessage1.setData("word nima");
        System.out.println(subMessage.getData());
        System.out.println(subMessage1.getData());
    }
}