Question 1:

a) What is the meaning of an object-oriented programming?

b) List eight simple types of data in Java

c) Explain how objects and classes are closely related.

d) Give three characteristics of a class and three characteristics of an object.

e) What is the difference between a compiler and an interpreter?

f) State two differences between a variable and an object.

Question 2:

a) Briefly explain the "Conditional Statement", with an example.

b) Describe what an array is and what is its importance?

c) What is a void method?

d) Briefly describe the difference between "Inheritance" and "Polymorphism".

e) Examine the following program and write down the output.
public class Exam
{ public static void main (String [ ]args )
{ String alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
System.out.println (alphabet);
System.out.println ("This string contains" + alphabet.length ( ) + "characters.");
System.out.println ("The character at index 4 is" + alphabet.charAt (4));
System.out.println ("The index of the character Z is" + alphabet.indexOf(‘Z'));
}
}