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Singleton in java  RSS feed

 
Ranch Hand
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Can anyone please explain me the meaning of Singleton with example ...
 
Sheriff
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Well singleton is a pattern in which you can create only one instance of a class. You implement it by making the constructor private and creating a static factory method which sends the only object of the class to the caller.

This is a sample code-

 
Java Cowboy
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See Singleton pattern in Wikipedia and Java Singleton Design Pattern.

Note that some people regard the singleton design pattern as an anti-pattern (a bad thing). See, for example Why Singletons Are Controversial.
 
It is sorta covered in the JavaRanch Style Guide.
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