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Difference between static class and singleton pattern?

Just wanted to know what exactly is the difference between a singleton and static class?

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  • thanks guys, i am receiving i have to wait for 5 minutes to accept the answer. Commented May 25, 2010 at 13:07

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In a singleton you can choose to initialize the variable at first call. Whereas a static variable starts to exists at the moment you include / call the file where the static variable is declared.

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And if the file is autoloaded? Presumably then the static class doesn't come to exist until you first call it, like with a singleton?
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The big difference between a singleton and a bunch of static methods is that singletons can implement interfaces.But static wont

Difference between static class and singleton pattern?

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A singleton is an abstract design pattern that describes an object that can only be created once. A static class is a specific implementation of this design pattern.

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Singleton is the pattern that has nothing to do with the implementation in a particular language. Technically singleton says that you can have only one instance of object in the system. In case of static class you will not have any objects at all.

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