What are some common use cases for Java design patterns?

What are some common use cases for Java design patterns?

Java design patterns are solutions to common problems in software design. Some common use cases include: 1. Singleton for managing shared resources, 2. Factory for creating objects without specifying the exact class, and 3. Observer for implementing event handling.

Can you explain the Singleton pattern in more detail?

Sure! The Singleton pattern ensures that a class has only one instance and provides a global point of access to it. It's useful in scenarios like logging, configuration settings, or when managing a connection pool.

What about the Factory pattern? How does it work?

The Factory pattern defines an interface for creating an object but allows subclasses to alter the type of objects that will be created. This is useful when the exact type of the object isn't known until runtime.

Are there any other patterns I should know about?

Yes, there are many patterns! Some other important ones include the Strategy pattern for defining a family of algorithms, the Decorator pattern for adding behavior to objects dynamically, and the Command pattern for encapsulating requests as objects.