Subject Code: CSF203/CS202 Printed Page 1 of 2
DIT UNIVERSITY , DEHRADUN
B.TECH (CSE) : END TERM EXAMINATION, ODD SEM 2022-23 (SEM III)
Roll No.
Subject Name : Introduction to Java Programming
Time: 3 Hours Total Marks: 100
Note: All questions are compulsory. No student is allowed to leave the examination hall before the completion of the exam.
Subject Code: CSF203/CS202
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Printed Page 2 of 2
Q.1) Attempt all Parts : BT CO
L
(a) What is JVM? Give importance of JVM in java language. 1 1
(b) What is importance of super and this keyword in inheritance? Illustrate with suitable 2 4
example.
(c) Define a class with name Student with suitable data members. Create two objects using 3 4
two different constructors of the class.
(d) What is the difference between an interface and an abstract class? Explain with an 3 4
example.
[4 x 5= 20]
Q.2) Attempt all Parts : BT CO
L
(a) Explain various access specifiers supported by Java with an example. 2 1
(b) Write a step to declare and define two and three dimensional arrays of a class. 1 2
(c) Write short note on the following Object Oriented concepts: 2 4
i) Encapsulation ii) Polymorphism
(d) Why Java Strings are Immutable? Justify. 2 4
[4 x 5= 20]
Q.3) Attempt any two parts : BT CO
L
(a) Write a program to define a class with name Employee with members as id and salary. 4 4
Accept data for five employees and display details of employee getting highest salary.
(b) Write differences between the following: 3 5
a. Method overloading and Method overriding.
b. Throw and Throws.
c. checked and unchecked exceptions.
(c) Write a program in java to search a given number in an array. 3 2
[2 x 10= 20]
Q.4) Attempt any two parts : BT CO
L
(a) Write a program to perform the following concept using classes, objects, constructors: 4 4
i) Read 5 subject’s marks of 5 students
ii) Calculate the total marks obtained by each students and print the result on the
screen.
(b) Write a Java program to find the area and perimeter of square and circle using interface. 4 5
(c) Write a java program to create own exception for Negative Value Exception if the user 4 5
enter negative value.
[2 x 10= 20]
Q.5) Attempt any two parts : BT CO
L
(a) What is an exception? Explain the class hierarchy of exceptions. Discuss the use of try, 3 5
catch and finally blocks. Can we have more than one catch blocks with one try block?
13. List any four
(b) 3 4
