singleton : Java Glossary

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singleton
Singletons are the design pattern when you want only one instance of a class created. You make the constructor private, and give access to the instantiated object via a static instance method that creates the object if it has not been created already. The advantages of this technique over using class variables and methods are: Here is typical code courtesy of Chris Smith for postponing the creation of the singleton in a way that is thread safe.

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