Dr. A.P.J. Abdul Kalam University
Master of Computer Application
Fourth Semester Examination, June-2021
Java Programming & Technologies [MCA405E1(A)]
Time: 3:00 Hrs Max Marks 70
Note: All questions are compulsory. All questions carry equal marks.
Q.1 (a) Explain OOPS in detail. What are differences between JAVA and C++?
(b) What do you understand by inheritance and also define its types with example?
Q.2 (a) Write the steps of creating RMI application.
(b) Describe socket, client server and proxy server.
Q.3 (a) What is constructor? Write a program to count no. of objects created for aclass.
(b) Explain the life cycle of thread with block diagram.
Q.4 (a) Explain exceptional handling in JAVA. Also write types of exception.
(b) What is applet? What are different types of applets? Explain its security and
restrictions.
Q.5 Define following:
(i) Method overriding
(ii) Dynamics method dispatch
(iii) Abstract classes
(iv) AWT vs. Swings
(v) Stream classes
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