MCQ'S

• 1. The general purpose of the Singleton pattern is to:
  • a) Ensure that no more than one instance of a class exists.
  • b) Ensure that only one instance of a class exists at the same time.
  • c) Separate objects in a single class from objects in another class.
  • d) Control creation of objects in a single class or another class.

Answer: (A)

• 2. Which of the following is true about Singleton class?
  • a) The class has only a single member method.
  • b) The class has only a single field.
  • c) The class should have exactly one instance.
  • d) The class cannot be sub-classed.

Answer: (C)

Singleton Implementation directory singleton-pattern contains all implementation.

Factory Implementation directory factory-pattern contains all implementation.