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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')); } }
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