NALANDA OPEN UNIVERSITY QUESTION, 2017, MCA, Part-II , Paper-XIX (Object Oriented Technologies and Java Programming)

NALANDA OPEN UNIVERSITY QUESTION, 2017, MCA, Part-II , Paper-XIX (Object Oriented Technologies and Java Programming)

                                                                               2017
                                                                       Time: 3 hours
                                                                      Full Marks: 80
                                       Answer any five questions. All questions carry equal marks.

1. What is multithreading? Explain how does it help java in its performance? Differentiate between throw and throws?

2. What is Inheritance? Explain different types of inheritance in Java. Briefly explain importance of super keyword in java?

3. What are shift operators? How many types of shift operators are available in Java? Write a Java program to explain the concept of shift operators.

4. Explain how exception handling is done in Java, with the help of an example. What is a package in Java? Explain how package is created in Java.

5. Distinguish between the following terms with examples:
   (i) Exception and Error
   (ii) Method overloading and overriding
   (iii) Final and Finally
   (iv) Instance variables and class variables.

6. What is Constructor? Explain constructor overloading in Java with an example.

7. What is URL? Explain two constructors for URL, in Java. net package. Explain how you may connect to a URL in Java.

8. Compare the different layout managers in brief. Write a servlet program that fetches all data from client and stores it in a database successfully.

9. What do you mean by an event? Explain different components of an event.

10. What are the different types of AWT components? How are these components added to the container. Explain using an example.