序列化 serialization
Serialization is a mechanism by which you can save the state of an object by converting it to a byte stream.
JAVA中实现serialization主要靠两个类:
- ObjectOuputStream
- ObjectInputStream
他们是JAVA IO系统里的OutputStream和InputStream的子类
自定义序列化的作用如下：
- Persist only meaningful data.
- Manage serialization between different versions of your class.
- Avoid exposing the serialization mechanism to client API.