Java Quizzes

Test your knowledge of Java backend interview essentials, including Core Java, OOPs, Java 8 features, multithreading, SQL, and microservices. Prepare for Java interviews with beginner-friendly, real-world questions focused on core concepts and best practices.

Test your understanding of important Java backend concepts with this quiz based on real Cognizant interview questions from 2025. Assess your core Java, serialization, HashMap, and collection knowledge to prepare effectively for your next technical interview.

Explore the fundamentals of Java, including variables, data types, operators, control structures, and simple OOP concepts in a light and engaging way. This quiz is designed for beginners who want to build a solid foundation and enjoy learning the essentials of Java programming.

Explore essential Java programming concepts in this beginner-friendly quiz, including JDK setup, IDE usage, writing your first Java project, and understanding the main method. Perfect for those starting with Java or reviewing core fundamentals for 2025 and beyond.

Test your understanding of Java’s core Object-Oriented Programming concepts, Collections Framework, and Multithreading basics with this easy-level quiz. Ideal for interview preparation, it covers essential Java topics with clear, accessible questions.

Enhance your Java expertise with an audio quiz on bitwise operators, shifting techniques, and algorithmic tricks for efficient problem-solving. This quiz is designed for learners who want to practice advanced concepts in a convenient, interactive format while strengthening their coding interview readiness.

Review the top 10 Java interview questions covering core concepts like OOP, collections, multithreading, exception handling, and memory management. This quiz is designed for learners who want a quick yet effective way to prepare for common Java coding interview challenges.

Explore the essentials of the Java Collection Framework with this beginner-friendly quiz covering key interfaces, classes, methods, and properties. Ideal for interview preparation and revising core collection concepts in Java.

Test your understanding of Java Collections, including Lists, Sets, Maps, Iterators, and common operations that simplify data handling. This quiz is designed for learners who want to strengthen their foundation in one of the most widely used parts of the Java standard library.

Quickly assess your understanding of constructors in Java with these easy questions designed for beginners. Perfect for reinforcing key concepts in Java class creation and object instantiation.

Revisit the essentials of Java, including OOP principles, inheritance, polymorphism, interfaces, and exception handling in an engaging audio format. This quiz is designed for learners who want to strengthen their understanding of core Java concepts while learning on the go.

Test your proficiency in Java with this engaging quiz featuring medium-level questions based on frequently asked Java interview topics, including OOP concepts, data types, access specifiers, and loop mechanisms.

Explore foundational aspects of Java data structures with practical, introductory-level questions ideal for beginners. Understand structure types, use cases, and basic distinctions in Java programming.

Challenge your mastery of Java with advanced data structures and algorithms, including trees, graphs, heaps, and dynamic programming techniques. This quiz is designed for learners preparing for competitive coding and technical interviews that demand strong problem-solving skills.

Explore core principles of Java enums, covering syntax, features, methods, and their use as type-safe constants. This quiz targets Java developers seeking a deeper understanding of enums’ behaviors and customization in projects.

Sharpen your understanding of core Java interview topics, including JVM architecture, object-oriented principles, and key relationships in Java programming.