在 java 文件 io 中序列化

Question

Consider the following four hypothetical classes to be defined in a project: A, B, C, and D. A will be the parent class of B and C. C will have a data member variable of class D. In this project, we want to store C objects in a file using serialization approach, that is we want to create binary files that contain C objects. Which classes of this project must implement the interface Serializable?

Answer 1

The C class should implement Serializable .

Serializability of a class is enabled by the class implementing the java.io.Serializable interface. Classes that do not implement this interface will not have any of their state serialized or deserialized.

You cas read the official documentation of the interface:

Interface Serializable

On the other hand, for your D attribut you have to options:

• Implement Serializable, if you want to send it
• Make it transient , if you wan't to send it