What is a serialVersionUID in Java❓ #binary_brains_b2 #javabrains #javaexperts

What is a serialVersionUID in Java❓ #binary_brains_b2 #javabrains #javaexperts
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The serialVersionUID is a unique identifier used in Java serialization to verify that the sender and receiver of a serialized object are compatible with respect to serialization. If the serialVersionUID of a class does not match during deserialization, it results in an InvalidClassException.

Key Points:

It is a static final long value defined in a Serializable class.

It helps in maintaining compatibility when there are changes in the class structure.

If not explicitly declared, the JVM generates it based on the class structure, which can lead to unpredictable behavior when the class changes.
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