OOPs through Java - R23 - Model paper-2

-


 

MODEL QUESTION PAPER – 2

Object-Oriented Programming through Java
Time: 3 Hours                                                                                                          Max Marks: 70

SECTION – I (10 × 5 = 50 Marks)

Answer ALL questions. Each question has (a) and (b) sub-questions.

Unit I

  1. (a) Explain the differences between Procedural Programming and Object-Oriented Programming. (5M)
    (b) Write a Java program to find whether a number is prime or not using loops. (5M)

(OR)

  1. (a) Explain different types of operators in Java with examples. (5M)
    (b) Write a program to calculate factorial of a number using command line arguments. (5M)

Unit II

  1. (a) Explain method overloading and method overriding with suitable examples. (5M)
    (b) Write a Java program to demonstrate the use of the final keyword (variable, method, class). (5M)

(OR)

  1. (a) Explain the concept of recursion in Java with an example. (5M)
    (b) Write a program to demonstrate the difference between call by value and call by reference. (5M)

Unit III

  1. (a) Write a note on one-dimensional and two-dimensional arrays with examples. (5M)
    (b) Write a Java program to perform binary search on an array. (5M)

(OR)

  1. (a) What is multiple inheritance? Explain how it is implemented in Java with an example. (5M)
    (b) Write a program that demonstrates constructor chaining using the super keyword. (5M)

Unit IV

  1. (a) Explain the importance of Java library packages. Mention any four classes of java.util. (5M)
    (b) Write a program to generate random numbers using the Random class and display them in ascending order. (5M)

(OR)

  1. (a) Differentiate between checked and unchecked exceptions with examples. (5M)
    (b) Write a program to create and throw a custom exception when a user enters a negative number. (5M)

Unit V

  1. (a) Differentiate between String, StringBuffer, and StringBuilder. (5M)
    (b) Write a program to create a thread that prints numbers from 1 to 10 using Runnable interface. (5M)

(OR)

  1. (a) Explain the architecture of JDBC. (5M)
    (b) Write a JavaFX program to display a label and a text field where the user enters their name. (5M)

SECTION – II (10 × 2 = 20 Marks)

Answer ALL questions. Each carries 2 marks.

  1. List any two OOP principles.

  2. What is a symbolic constant in Java?

  3. Give an example of constructor overloading.

  4. What is the purpose of the this keyword?

  5. Write the syntax of a multi-dimensional array declaration.

  6. Define interface. Give an example.

  7. What is autoboxing?

  8. Write the syntax of a try-catch block.

  9. Mention any two differences between throw and throws.

  10. What is the role of DriverManager in JDBC?

Comments

Post a Comment

Popular posts from this blog

Artificial Intelligence - UNIT - 1 Topic - 1 : Introduction to AI (Artificial Intelligence)

-
Image
  1.1 What is Artificial Intelligence? Definition : Artificial Intelligence (AI) is the branch of computer science that aims to create machines that can mimic human intelligence and behavior. Popular Definitions : "AI is the science and engineering of making intelligent machines." – John McCarthy (Father of AI) "AI is the study of how to make computers do things which, at the moment, people do better." – Elaine Rich 1.2 Goals of Artificial Intelligence (AI) The main goal of AI is to create machines that can think and act like humans. These systems are designed to perform tasks that usually require human intelligence. The key goals include: Thinking and Reasoning: AI should be able to solve problems and make decisions by thinking logically, just like a person would. Learning from Experience: AI systems should improve over time by learning from data and past experiences, similar to how humans learn. ...
Read more

Career Guide - B.Tech Students

-
  ✅ 1. Introduction In today’s uncertain tech world, many B.Tech students fear layoffs and job insecurity. But with the right planning and skillset, you can build a stable, high-demand career in IT. This guide will show you future-proof technologies, smart career strategies, and practical steps to follow. Whether you're in your 1st year or final year, there's a clear path to success. Let’s explore how to turn your fear into confidence and create a strong, unstoppable career in tech. 👉 Lesson: Jobs aren’t lost. Low-value skillsets are. 🔮 2. Future-Proof Technologies & Career Domains (2025–2030) These are the top domains with strong demand and future growth : Technology/Field Why It’s Hot Learning Difficulty Jobs Availability 💡 AI/ML Powers automation, LLMs, etc. High 🔥🔥🔥 🌐 Full Stack Web Dev Always in demand Medium 🔥🔥 📊 Data Science/Analytics Every industry needs insights High 🔥🔥🔥 🛡️ Cybersecurity Security threats rising Medium 🔥🔥🔥 🌍 Cloud C...
Read more

OBJECT ORIENTED PROGRAMMING THROUGH JAVA : Unit - 3 : Topic - 1 : Arrays

-
Image
1. Introduction to Arrays Definition An array in Java is a collection of variables of the same data type stored at contiguous memory locations . It allows us to store multiple values in a single variable, instead of declaring separate variables for each value. Arrays are fixed-size (the size must be defined at the time of creation). Each element in an array is accessed using an index . Array indexing in Java starts from 0 . Why Arrays? To handle large amounts of data efficiently. Easy traversal using loops. Better performance as elements are stored in continuous memory. Key features of Arrays Store Primitives and Objects: Java arrays can hold both primitive types (like int, char, boolean, etc.) and objects (like String, Integer, etc.) Contiguous Memory Allocation When we use arrays of primitive types, the elements are stored in contiguous locations. For non primitive types, references of items are stored at contiguous locations. Zero-based Indexing: The first e...
Read more