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____________ is a useful design pattern that ensures a class has only one instance.

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____________ is a useful design pattern that ensures a class has only one instance.

(a) Modular code

(b) Lossless paradigm

(c) Granular methods

(d) Singleton

This question was posed to me in homework.

Origin of the question is JMock in chapter Testing with Mock Objects of JUnit

1 Answer

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Best answer
Right choice is (d) Singleton

Easy explanation: Most often, the implementation of a singleton defines a private constructor and a static variable.

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