Flyweight Design Pattern in Java

The Flyweight design pattern is a structural design pattern that focuses on minimizing memory usage by sharing as much data as possible with similar objects. This pattern is particularly useful when you need to create a large number of objects that share a common state.

Why Use the Flyweight Pattern?

1. Memory Efficiency: Reduces memory usage by sharing common parts of the state between multiple objects.
2. Performance: Improves performance by reducing the overhead associated with creating and managing a large number of objects.
3. Scalability: Enhances scalability by enabling the efficient management of a large number of objects.

Key Characteristics of the Flyweight Pattern

• Flyweight: An interface or abstract class that declares methods for operations on intrinsic and extrinsic states.
• ConcreteFlyweight: Implements the Flyweight interface and represents the shared state.
• UnsharedConcreteFlyweight: Represents objects that do not share state.
• FlyweightFactory: Creates and manages Flyweight objects, ensuring that flyweights are shared correctly.
• Client: Uses the Flyweight objects and provides the extrinsic state.