Tuesday, February 7, 2023

Dr. A.P.J. Abdul Kalam University MCA IV Sem Java Programming & Technologies [MCA405E1(A)] June 2021 Question Paper

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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