Implementing the singleton pattern in Java?

Before going the singleton route, reconsider. Do you really need a singleton? If you're asking for scenarios when you need to implement singletons, it's because the need for them didn't really express.

You're better off not introducing singletons in your code base just because it feels cool to follow design patterns.

Basically, in Java you implement singleton by giving a class a private no-args constructor (private MyClass()), and statically (or lazily) initializing a single instance of the class which is returned by a static MyClass getInstance() method.

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