JNTUH MCA 3rd Sem Last 10 Years 2023-2013 Question Papers R20-R09 || Jawaharlal nehru technological university
Code No: 813AQ
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
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MCA III Semester Examinations, July/August - 2021
JAVA PROGRAMMING
Time: 3 Hours Max. Marks: 60
Answer any five questions
All questions carry equal marks
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- What object oriented features are supported by Java language? Briefly explain with suitable code segments. [12]
- Write a program to demonstrate constructor overloading.
- Differentiate between Abstract classes and interfaces. [7+5]
- What is inheritance? What are the costs of inheritance? Explain hierarchical and multi-level inheritance. [12]
- Is every nested class an inner class? Justify your answer.
- What is the role of CLASSPATH variable for package usage? [6+6]
- Write a program to append a file content to another file, read the two file names as command line arguments.
- What is the need of string Tokenizer? [7+5]
- What is the support provided by Java for network programming through java.net package? Give an the overview. [12]
- How can a user define his/her own exception? Write a program to explain handling such exception. [12]
- What is an event? List various types of events and respective sources of events in event handling. [12]
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