Download JNTUH MCA 3rd Sem R15 2018 January 823AD Java Programming Question Paper

Download JNTUH (Jawaharlal nehru technological university) MCA (Master of Computer Applications) 3rd Sem (Third Semester) Regulation-R15 2018 January 823AD Java Programming Previous Question Paper

R15

Code No: 823AD















JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

MCA III Semester Examinations, January - 2018

JAVA PROGRAMMING

Time: 3hrs













Max.Marks:75


Note: This question paper contains two parts A and B.

Part A is compulsory which carries 25 marks. Answer all questions in Part A. Part B
consists of 5 Units. Answer any one full question from each unit. Each question carries
10 marks and may have a, b, c as sub questions.



PART - A



















5 ? 5 Marks = 25

1.a) Write a short note on Polymorphism with an example.







[5]

b) Explain about packages.















[5]

c) Write a short on TreeMap.















[5]

d) Explain about unchecked exception.











[5]

e) Explain the concept of applets.













[5]



PART - B

















5 ? 10 Marks = 50


2.

Explain about various parameter passing techniques with a sample program.

[10]

OR

3.

Explain different types of constructors in Java. Give suitable examples.



[10]



4.

Explain about the following:
a) Inheritance



b) Member access rules.















[5+5]

OR

5.

Explain the usage of following concepts with a sample programs



a) Abstract class



b) final keyword.

















[5+5]


6.

Explain the following Legacy collection classes



a) Stack



b) Vector.



















[5+5]

OR

7.

Discuss in detail the following



a) StringTokenizer



b) Scanner.



















[5+5]



8.

Explain about the usage of try, catch and finally.









[10]

OR

9.

Explain thread life cycle.















[10]



10.

Discuss about Flow Layout and Border Layout.









[10]

OR

11.

Write a Java program to demonstrate the key handling events.





[10]



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