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Q 1 - Which of the following is correct about Factory design pattern.
Factory pattern is one of most used design pattern in Java. This type of design pattern comes under creational pattern as this pattern provides one of the best ways to create an object. In Factory pattern, we create object without exposing the creation logic to the client and refer to newly created object using a common interface.
Q 2 - Integer.valueOf is an example of Factory pattern.
Bridge pattern is used when we need to decouple an abstraction from its implementation so that the two can vary independently.
Q 4 - Which of the following pattern is primarily used to reduce the number of objects created and to decrease memory footprint and increase performance?
This pattern is used to get a way to access the elements of a collection object in sequential manner without any need to know its underlying representation.
Q 6 - In which of the following pattern, a null object replaces check of NULL object instance?
Structural Design Patterns concern class and object composition. Concept of inheritance is used to compose interfaces and define ways to compose objects to obtain new functionalities.
Q 10 - Which of the following is the correct list of entities of Service Locator pattern?
