Java Deserialization Basics Explained

The process of Java deserialization involves converting a binary stream into a Java object, with the basic principle as follows:

1. Deserialization in Java is achieved through the ObjectInputStream class, which extends the InputStream class. This class is used to read object data from an input stream and deserialize it into Java objects.
2. Before deserializing, it is necessary to create an ObjectInputStream object and pass an input stream as a parameter. This input stream can be a file input stream, network input stream, etc.
3. During the process of deserialization, the ObjectInputStream reads the header information of the binary stream to create a corresponding Java object based on the class and field information within it.
4. Next, the ObjectInputStream will read the data from the binary stream, fill the data into various fields of the Java object, and ultimately complete the process of object deserialization.
5. During the deserialization process, it is important to ensure that the class structure of serialization and deserialization is consistent, otherwise there may be issues with class version incompatibility or mismatched fields.

In conclusion, the basic principle of Java deserialization is to convert binary data into Java objects, which is achieved using the ObjectInputStream class while ensuring class structure consistency.