Singleton pattern inspection plugin for IntelliJ Idea

Singleton Inspection Plugin at plugins portal

This inspection reports about (probably) inappropriate use of Singleton pattern. Just write getInstance() method, and this inspection will check this class like a Singleton. Singleton class should be checked for next errors:

• Class should be final.
• Class should have private constructor.
• getInstance() method must be public and static and return instance of its class.

You may be also interested in JPatterns library for patterns annotations.