OOPs through Java - R23 - Model paper-2

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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?

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