Java OCA OCP Practice Question 1332

Question

Which is the advantage of encapsulation?

  • A. Only public methods are needed.
  • B. No exceptions need to be thrown from any method.
  • C. Making the class final causes no consequential changes to other code.
  • D. It changes the implementation without changing the interface and causes no consequential changes to other code.
  • E. It changes the interface without changing the implementation and causes no consequential changes to other code. 


D.

Note

When a class is properly encapsulated, it is possible to change the class's implementation without changing its interface.

Implementation changes do not affect other classes which abide by this interface.




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