Externalizable Interface

The Externalizable interface in Java provides a way for developers to control exactly how an object is converted to and from a byte stream, which is essential for storage or transmission. By implementing this interface, you define custom methods to specify what data gets serialized (saved) and how it's reconstructed. This offers more flexibility and efficiency compared to default serialization, allowing precise management of an object's savings and loading process. Essentially, Externalizable gives you direct control over the serialization process, enabling optimized and tailored data handling for complex or performance-sensitive applications.