java list 深度拷贝

public static List deepcopy(List src) throws IOException, 
            ClassNotFoundException { 
        ByteArrayOutputStream byteout = new ByteArrayOutputStream(); 
        ObjectOutputStream out = new ObjectOutputStream(byteout); 
        out.writeObject(src); 
        ByteArrayInputStream bytein = new ByteArrayInputStream(byteout 
                .toByteArray()); 
        ObjectInputStream in = new ObjectInputStream(bytein); 
        List dest = (List) in.readObject(); 
        return dest; 
 
    }