Virtual Labs

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Aim

Theory

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Procedure

Simulation

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References

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Aim

Theory

Pretest

Procedure

Simulation

Posttest

References

Feedback

To implement standard patterns of object creation

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Beginner

Intermediate

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1.What is the main purpose of Creational Design Patterns?

a: a.To provide an interface for creating objects in a superclass. Explanation

Explanation

b: b.To increase flexibility and reuse of existing code. Explanation

Explanation

c: c.To provide a more general and flexible approach to object creation. Explanation

Explanation

d: d.To ensure there is only one instance of an object created. Explanation

Explanation

2.Which of the following is a need for using the Factory pattern?

a: a.When a class wants to create objects of all its subclasses. Explanation

Explanation

b: b.When the parent classes choose the creation of objects to its sub-classes. Explanation

Explanation

c: c.When a class knows what sub-classes will be required to create. Explanation

Explanation

d: d.When a class wants to restrict the creation of objects to its subclasses. Explanation

Explanation

3.What is the purpose of the Singleton design pattern?

a: a.To provide an interface for creating objects in a superclass. Explanation

Explanation

b: b.To increase flexibility and reuse of existing code. Explanation

Explanation

c: c.To ensure there is only one instance of an object created. Explanation

Explanation

d: d.To provide a more general and flexible approach to object creation. Explanation

Explanation

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