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Object Oriented Programming with Java Unit 3 – Java New Features: AKTU previous year questions

9 AKTU questions from Unit 3 (Java New Features) asked in 2024–2025, tagged by marks, year and topic. In short: about 24 marks of every paper come from this unit; the most asked topic is Functional Interfaces and Lambda (3 times); 3 questions came back in a later year. The latest ones are listed below; on the page you can filter them by 2-mark or long questions, topic and repeats.

Unit 3 previous year questions

  • What is a functional interface? Give an example. (2 marks, 2025, Functional Interfaces and Lambda)
  • What is the Stream API in Java? How does it help in functional-style operations? (7 marks, 2025, Stream API)
  • What are functional interfaces and how are they implemented using lambda expressions? (7 marks, 2025, Functional Interfaces and Lambda)
  • Describe the role of annotations in Java and how type annotations are used. (7 marks, 2025, Annotations and Modules)
  • Write a Java program to create an ArrayList<String> with five items and display all the elements using forEach method. (2 marks, 2024, Stream API)
  • Explain the concept of Sealed classes in Java with suitable example. (2 marks, 2024, Modern Java Syntax Features)
  • Explain the functional interfaces in Java. Describe lambda expressions with the help of functional interfaces. (7 marks, 2024, Functional Interfaces and Lambda)
  • Explain Java stream API and its applications. Describe Intermediate and terminal operations with suitable example. Write a program to print sum of all even numbers from an ArrayList<Integer> containing all integers from 1 to 10. (7 marks, 2024, Stream API)
  • Compare and contrast switch-case statement with switch-expression in Java. Explain with suitable example. (7 marks, 2024, Modern Java Syntax Features)

Most asked Unit 3 topics

  • Functional Interfaces and Lambda – asked 3 times
  • Stream API – asked 3 times
  • Modern Java Syntax Features – asked 2 times

Unit 3 question pattern

  • 2-mark questions: 3 asked in 2024–2025
  • 7-mark questions: 6 asked in 2024–2025
  • About 24 marks from Unit 3 in every paper
  • 3 questions were asked again in a later year

Unit 3 questions year by year

  • 2025: 4 Unit 3 questions asked (23 marks across that year's papers)
  • 2024: 5 Unit 3 questions asked (25 marks across that year's papers)