The singleton implemented in Example 1 is easy to understand ... although the Singleton pattern is one of the simplest design patterns, implementing it in Java is anything but simple.

We discuss some of the most common design ... The Singleton Pattern restricts the instantiation of a Class and ensures that only one instance of the class exists in the Java Virtual Machine ...

The Singleton design patter, for example, has several pitfalls that could discourage its use. Typically, you would use the Singleton design pattern for implementing PrintSpoolers, Logging ...