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Q 1 - Which of the following is correct about Singleton design pattern.
Singleton pattern is one of the simplest design patterns in Java. This type of design pattern comes under creational pattern as this pattern provides one of the best ways to create an object.This pattern involves a single class which is responsible to create an object while making sure that only single object gets created. This class provides a way to access its only object which can be accessed directly without need to instantiate the object of the class.
Q 2 - If we serialize a singleton object and deserialize it then the result object will be same.
Command pattern is a data driven design pattern and falls under behavioral pattern category. A request is wrapped under an object as command and passed to invoker object. Invoker object looks for the appropriate object which can handle this command and passes the command to the corresponding object which executes the command.
Q 5 - Which of the following describes the Memento pattern correctly?
Front Controller pattern, is used to provide a centralized request handling mechanism so that all requests will be handled by a single handler.
Q 8 - Which of the following pattern creates object without exposing the creation logic to the client and refer to newly created object using a common interface?
