Java对象的深拷贝和浅拷贝、集合的交集并集

http://blog.csdn.net/lian_1988/article/details/45970927

http://www.cnblogs.com/yxnchinahlj/archive/2010/09/20/1831615.html

深拷贝的有效代码：

public Object deepClone() throws IOException, OptionalDataException,ClassNotFoundException
    {
        // 将对象写到流里
        ByteArrayOutputStream bo = new ByteArrayOutputStream();
        ObjectOutputStream oo = new ObjectOutputStream(bo);
        oo.writeObject(this);
        // 从流里读出来
        ByteArrayInputStream bi = new ByteArrayInputStream(bo.toByteArray());
        ObjectInputStream oi = new ObjectInputStream(bi);
        return (oi.readObject());
    }

集合的交集、并集

http://www.cnblogs.com/focusj/archive/2010/12/23/2057655.html