Object-oriented Programming

Question 1 (a) Define a service class called Employee that has 3 data members, id, name and department. The class has a constructor to initialize all data members through the constructor's parameters, getter and setter methods for all data members and a toString() method which returns a satring that contains all object's data members. (b) Write a main class to create one object from the above class and test all the method created in the class. Question 2 Define a programmer-defined class named Cuboid that contains 3 instance variables - length (I), width (w) and height (h) of a cuboid. The class also includes getter and setter methods for each instance variables and methods perimeter(), area() and volume() which return perimeter, total surface are and volume of the cuboid respectively. Write also 2 constructors for the class - one with no-arg and second with 3 arguments for all instance variables. Formula for: Perimeter=4(I+w+h)Totalsurfacearea=2(Iw+wh+hl)Volume=Iwh