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Question:
Which design pattern is used to separate the interface from the implementation and allows them to vary independently?

1.Adapter Pattern

2.Decorator Pattern

3.Bridge Pattern

4.Facade Pattern

Posted Date:-2024-02-07 13:32:06

More MCQS Questions and answers

  1. Filters were officially introduced in the Servlet ___________ specification.
  2. Java servlets are an efficient and powerful solution for creating ………….. for the web.
  3. What is the default transaction attribute of a Session Bean in EJB?
  4. What is the key benefit of using EJBs for developing enterprise applications?
  5. What is the main purpose of Enterprise JavaBeans (EJB) technology?
  6. What is the purpose of the JNDI (Java Naming and Directory Interface) in EJB?
  7. What is the purpose of the “activation-config” element in the deployment descriptor of a Message-Driven Bean (MDB)?
  8. What is the purpose of the “ejb-jar.xml” deployment descriptor in EJB?
  9. What is the purpose of the “transaction-type” element in the EJB deployment descriptor?
  10. What is the role of Entity Beans in EJB?
  11. Which design pattern is used to define a family of algorithms and make them interchangeable?
  12. Which design pattern is used to encapsulate the creation of an object and allows only one instance to be created?
  13. Which design pattern is used to provide a way to access the elements of an object without exposing its internal representation?
  14. Which design pattern is used to provide a way to add new behavior to an object without changing its class?
  15. Which design pattern is used to provide a way to communicate between objects without them having direct dependencies on each other?
  16. Which design pattern is used to provide a way to decouple an abstraction from its implementation so that the two can vary independently?
  17. Which design pattern is used to provide a way to define the skeleton of an algorithm and allow its subclasses to redefine certain steps?
  18. Which design pattern is used to provide a way to encapsulate a request as an object and allows the request to be queued, logged, and undone?
  19. Which design pattern is used to provide a way to encapsulate complex logic and data structures and present a simplified interface to the user?
  20. Which design pattern is used to provide a way to encapsulate the creation of objects without specifying their concrete classes?
  21. Which design pattern is used to provide a way to ensure that a group of operations are performed as a single transaction?
  22. Which design pattern is used to provide a way to group related objects into a single object?
  23. Which design pattern is used to provide a way to handle requests by passing them through a chain of objects until one of them handles the request?
  24. Which design pattern is used to provide a way to manage a group of related objects as a single object?
  25. Which design pattern is used to provide a way to modify the behavior of an object dynamically?
  26. Which design pattern is used to provide a way to reduce the number of objects created by sharing objects that are the same?
  27. Which design pattern is used to provide a way to represent an object as a surrogate for another object?
  28. Which design pattern is used to provide a way to respond to events and changes in state?
  29. Which design pattern is used to provide a way to separate the construction of a complex object from its representation?
  30. Which design pattern is used to separate the interface from the implementation and allows them to vary independently?
  31. Which EJB type is best suited for high-performance, concurrent operations?
  32. Which EJB type is used for managing application-wide, shared resources and services?
  33. Which EJB type is used for performing asynchronous processing in EJB applications?
  34. Which EJB type is used for representing data entities and their relationships in an enterprise application?
  35. Which type of EJB can be invoked by other EJBs and clients?
  36. Which type of EJB can be used to encapsulate business logic that needs to be executed at regular intervals?
  37. Which type of EJB can maintain conversational state with a client?
  38. Which type of EJB is used for remote access by clients in a distributed environment?
  39. Which type of EJB is used to ensure that only one instance of a bean exists in the entire application?
  40. Which type of EJB is used to handle asynchronous messaging in an enterprise application?
  41. Which type of EJB is used to represent business logic in an enterprise application?
  42. Which type of Session Bean maintains conversational state with the client?
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