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Posted Date: 14 Jul 2008 Posted By: nihal Member Level: Gold
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2007 Jawaharlal Nehru Technological University B.Tech OOP THROUGH JAVA set no 4 Question paper
Code No: R05220402 Set No. 4
II B.Tech II Semester Regular Examinations, Apr/May 2007
OOP THROUGH JAVA
( Common to Electronics & Communication Engineering, Computer Science
& Engineering, Information Technology, Computer Science & Systems
Engineering, Electronics & Telematics and Electronics & Computer
Engineering)
Time: 3 hours Max Marks: 80
Answer any FIVE Questions
All Questions carry equal marks
1. (a) Describe the genesis of java. Also write brief overview of java
(b) List and explain the control statements used in java. Also describe the syntax
of the control statements with suitable illustration. [8+8]
2. (a) What is class? How does it accomplish data hiding?
(b) How do classes help us to organize our programs?
(c) Compare and contrast overloading and overriding methods. [4+4+8]
3. Explain about Object class in detail. [16]
4. Create an interface with at least one method, in its own package. Create a class in
a separate package. Add a protected inner class that implements the interface. In
a third package, inherit from your class and, inside a method, return an object of
the protected inner class, upcasting to the interface during the return. [16]
5. (a) What is the difference between unchecked and checked exceptions in java?
(b) Give the list of different unchecked exceptions in java and their meaning.
(c) Explain in detail any two unchecked exceptions. [4+6+6]
6. What are the methods supported by KeyListener interface and MouseListener in-
terface. Explain each of them with examples. [8+8]
7. Explain various methods of Applet class with necessary examples. [16]
8. What is StringTokenizer class? What is its use? Write a program to display the
course name, course fee & duration of course using StringTokenizer class.[4+4+8]
1 of 1
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