GTU BE 2019 Summer Question Papers || Gujarat Technological University
Subject Name: Object Oriented Programming With Java
Time: 02:30 PM TO 05:00 PM Total Marks: 70
3. Figures to the right indicate full marks.
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER- V(OLD) EXAMINATION - SUMMER 2019
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Subject Code: 150704 Date: 20/06/2019Subject Name: Object Oriented Programming With Java
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
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2. Make suitable assumptions wherever necessary.3. Figures to the right indicate full marks.
| MARKS | |
| Q.1 (a) Define polymorphism with its need. Define and explain static and dynamic binding using program. | 07 |
| (b) What is an Inheritance? Explain its types with proper diagram and suitable example(s). | 07 |
| Q.2 (a) Explain following keywords: this, super, final and static | 07 |
| (b) Write a program which checks whether entered number is prime or not? | 07 |
| OR | |
| (b) Write a program to check that whether the name given from command line is file or not? If it is a file then print the size of file and if it is directory then it should display the name of all files in it. | 07 |
| Q.3 (a) What is an Access Specifier? Explain it’s with suitable example with appropriate output in detail. | 07 |
| (b) How can we open and read text file in JAVA? Explain your answer with suitable example. Also use command line argument for passing a filename. | 07 |
| OR | |
| Q.3 (a) Differentiate Abstract class and Interface with suitable example. | 07 |
| (b) What is a collection in JAVA? Differentiate HashMap and Hashtable with suitable example. | 07 |
| Q.4 (a) Differentiate String with StringBuffer class. List out the methods available with String class and explain any five with proper JAVA code in detail. | 07 |
| (b) What is an Exception? List out various built-in exceptions in JAVA and explain any one Exception class with suitable example. | 07 |
| OR | |
| Q.4 (a) What is Multithreading? Explain Thread life cycle with proper JAVA code. | 07 |
| (b) What is Variable? How can we define variable in JAVA? Also list rules for valid variable names. | 07 |
| Q.5 (a) Differentiate Applet Vs. Swing. Explain the life cycle of applet with suitable example. | 07 |
| (b) What is synchronization? Write a program that uses thread synchronization with proper output. | 07 |
| OR | |
| Q.5 (a) What do you mean by Event Delegation Model in JAVA? How the concept of adapter classes is used in event handling? Explain it with suitable example. | 07 |
| (b) Write down a code for passing an Echo message by using TCP in Network Programming. | 07 |
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