From AI Tools/Open AI/ChatGPT
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Perfect 👍 Here’s a copyright-free comparison table of the Builder Pattern vs Factory Pattern in Java, styled for easy posting on Facebook/Blog:
🏗️ Builder Pattern vs ⚙️ Factory Pattern in Java
| Aspect | Builder Pattern | Factory Pattern |
|---|---|---|
| Type | Creational design pattern | Creational design pattern |
| Purpose | To construct complex objects step by step with fine-grained control. | To create objects without exposing the creation logic to the client. |
| When to Use | When an object requires many optional parameters or a complex construction process. | When you want to create objects from a family of related classes without specifying the exact class. |
| Object Creation | Involves a director (optional) and builder that gradually assemble the object. | Uses a factory method or class to decide which subclass to instantiate. |
| Flexibility | Gives precise control over how the object is built. | Simplifies object creation and centralizes it. |
| Client’s Role | Client calls builder methods (or uses chaining) to set properties and finally build the object. | Client only requests an object type, factory decides the exact class to return. |
| Example Use Cases | Creating a User object with optional fields (address, phone, etc.), building a complex configuration. | Creating shapes (Circle, Square, Rectangle), creating database connections, parsers. |
| Advantages | – Handles complex construction. – Improves code readability with method chaining. – Avoids telescoping constructors. | – Hides object creation logic. – Promotes loose coupling. – Easier to extend with new object types. |
| Disadvantages | More code to set up (requires builder classes). | Can create too many factory classes if overused. |
✅ Quick Summary:
- Use Builder Pattern when you want to construct a complex object step by step.
- Use Factory Pattern when you want to simplify object creation and let a factory decide which subclass to instantiate.
👉 Would you like me to also prepare a real-world analogy (like food ordering 🍔 for Builder, and coffee shop ☕ for Factory) so your readers instantly understand the difference?
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