What exactly do we mean when we talk about "encapsulation" while talking about object-oriented methods?

Inheritance makes it more difficult to design object class tests. Explain.

Note: Question of Object-oriented programming

Describe the classes, methods and attributes that you would use in the Object Oriented design of a simulated automobile. Use this format to describe your classes: Class: Door Methods: void Open(), void Close(), void SetLock(bool), bool GetLocked(), etc. Attributes: bool open, bool locked, class Window, etc.

There are notable differences between static and instance methods.

Answer with True or False for the following. Explain your answers.-It is legal to write a method in a class which overloads another method declared in the same.-It is legal to write a method in a superclass which overrides a method declared in a sub-class.

Directions: SHOW ALL YOUR WORK. REMEMBER THAT PROGRAM SEGMENTS ARE TO BE WRITTEN IN JAVA. Notes: Assume that the classes listed in the Quick Reference found in the Appendix have been imported where appropriate. Unless otherwise noted in the question, assume that parameters in method calls are not null and that methods are called only when their preconditions are satisfied. In writing solutions for each question, you may use any of the accessible methods that are listed in classes defined in that question. Writing significant amounts of code that can be replaced by a call to one of these methods may not receive full credit. An APLine is a line defined by the equation ax + by + c = 0 , where a is not equal to zero, b is not equal to zero, and a, b, and c are all integers. The slope of an APLine is defined to be the double value -a b/ . A point (represented by integers x and y) is on an APLine if the equation of the APLine is satisfied when those x and y values are substituted…

In the class diagram below we have a parking charge class for an object-oriented parking system that is to be designed using java. Briefly explain any implementation decisions and the reasoning behind those without writing the complete code. N.B explain how the implementation will proceed instead of writing code

What is TRUE about defining variables and methods in the class definition? Variables must be declared before methods are defined. Methods must be defined before variables are declared. Variable declarations and method definitions can be placed in any order. All variables must be public while all methods must be private.

Explain the procedure that must be followed in order for a method to take in arguments of both primitive and reference types.