1. Conceptual Questions

Briefly explain how Object Oriented Programming implements the concept of encapsulation and information hiding

b) In general, objects have two sets of members : attributes and methods. Explain the role these members play in designing an object.

c) What is the purpose of the constructor of a class?

d) Briefly explain the purpose of the toString method

e) What is the main difference between a static data member and non-static data member of an object. Give an example

f) When we use the Scanner class, we first create an object instance of String as shown below Scanner scan = new Scanner(System.in); However, when we use the Math class, we do not create an object instance, but use the object name Math as shown below.

Math.sqrt(20); Briefly explain this difference in usage