BACHELOR OF COMPUTER APPLICATIONS (BCA) (Pre-Revised) Term - End Examination 7 1. e) June, 2016 -
CS-74 : INTRODUCTION TO INTERNET PROGRAMMING Time : 2 hours
Maximum Marks : 60
Note : Question number 1 is compulsory. Attempt any three questions from the rest. Use Java programming language in your answers.
1. (a) What is inheritance ? How is inheritance implemented in Java ? Create a class named `University' and create another class 'School' by extending the University class. "School" has attributes "discipline", "faculty", "programmes". (b)
(c)
CS 74 -
Write an Applet program which draws a circle inside a rectangle. Fill the circle with red colour.
7
5
What does the keyword 'Synchronize' mean in Java ? When do you use it ? What are the disadvantages of synchronization ? 5 1 P.T.O.
(d)
"Static function can only use static data of the class." Is this statement correct ? Explain your answer.
(e) (f)
2.
What is a final class ? Give two examples of final classes defined in Java API.
4
Write a program to pick out the second biggest number in an array of n integers.
5
(a) What is a thread ? How do you implement threads in Java ? How do you stop a thread in Java ? Explain your answer with a Java 7
program. (b) Give the usage of the three Java access specifiers with the complete Java declaration for each method. 3.
(a) How are packages imported in Java ? Explain the benefits of importing a package into your program. (b) What is meant by garbage collection ? How is it done in Java ?
4.
4
(a) What is a Built-in Exception ? Explain user-defined exceptions using a Java program fragment. (b) Write a Java program to read 10 names from the keyboard and sort them in alphabetical order.
CS-74
2
3
5.
(a) What is an interface ? Can you extend an interface in Java ? Explain your answer with the help of a program fragment. 5 (b) Explain the concept of method overloading and method overriding with examples.
No. of Printed Pages : 3 BACHELOR OF COMPUTER APPLICATIONS ...
BACHELOR OF COMPUTER APPLICATIONS. (BCA) (Pre-Revised). 7 1. Term-End ... with the help of a program fragment. 5. (b) Explain the concept of method ...
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