You want all the clients using class A to use the same instance of class A, what should you do to achieve this goal?

Related MCQs

• Which GOF design pattern is applied in the code snippet below? public class PrintSpooler { private static final PrintSpooler INSTANCE = new PrintSpooler(); private PrintSpooler() {} public static PrintSpooler getInstance() { return INSTANCE; } }
• In a client-server model where ‘n clients’ are sending request or receiving data from ‘m servers’. There are ‘x intermediate servers’ present which re-route the request (coming from Clients) to appropriate server based on the type of request. The intermediate server also returns the response to the client user-interface. What is the role of the intermediate server here?
• Which design pattern you would you use to have a prototypical instance determine the concrete class of object being created?
• Which Design Pattern should you use when you want to parameterize objects by an action to perform.
• Which design pattern you would you use to decouple the creation procedure of a complex object from it's concrete instance to be able to apply that procedure on variety of implementations.
• Which GRASP pattern helps to find out answer for “Who should be responsible for creating a new instance of some class?"
• Which Design Pattern should you use whenyou want to represent part-whole hierarchies of objects.
• Given the following scenario: You want to create families of related objects, to be used interchangeably to configure you application. What is most appropriate GoF pattern to use?
• Define a family of algorithms, encapsulate each one, and make them interchangeable. It lets the algorithm vary independently from clients that use it.
• Encapsulate a request as an object, there by letting you parametrize clients with different requests, queue or log requests, and support undoable operation.