Use the Singleton design pattern to create classes of which only one instance can exist ... Spring Java creator unveils AI agent framework for the JVM. By Paul Krill. Jun 6, 2025 3 mins.

The Singleton pattern is deceptively simple, even and especially for Java developers. In this classic JavaWorld article, David Geary demonstrates how Java developers implement singletons, with ...

Developers can apply a Singleton Pattern on the factory class or make the factory method static. For example, we could create some concrete classes that implement the Shape interface.