Selenium automation testing course with Java- Serialization in Java- class 38
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Serialization in Java:-
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Serialization in Java is the process of converting an object’s state into a byte stream, so that it can be:
Stored in a file or database
Sent over a network
Saved in memory for later use
The reverse process (converting the byte stream back into an object) is called Deserialization.
Key Points about Serialization:
Implemented by java.io.Serializable interface
A marker interface (contains no methods).
Any class that needs to be serialized must implement Serializable.
Serialization API
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ObjectOutputStream is used for writing objects to a stream.
ObjectInputStream is used for reading objects from a stream.
serialVersionUID
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A unique identifier for classes during serialization and deserialization.
Ensures that a serialized object matches the class definition when deserialized.
If not declared, JVM generates one automatically, but it may change when the class is modified.
Transient Keyword
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Fields marked transient are not serialized.
Example: passwords, sensitive information, or derived values.
Static fields are not serialized
Because they belong to the class, not to an instance.