Java Quizzes

Get ready for your upcoming Java interview with simple yet insightful questions on OOP, collections, concurrency, and Spring basics tailored for senior developers. This quiz is designed for professionals who want a quick 2025-focused refresher before stepping into their next interview.

Explore key topics from advanced Java, including Collections Framework, Streams API, Concurrency, Generics, Annotations, and Reflection. This quiz is designed to help learners understand important principles and best practices in advanced Java programming.

Test your knowledge of Angular front-end development with this quiz based on common Angular interview questions and answers. Ideal for beginners and professionals, this quiz covers core Angular concepts, components, services, data binding, directives, and more.

Compare the strengths of C, C++, Java, and Python in the context of coding interviews, covering speed, libraries, syntax, and problem-solving efficiency. This quiz is designed for learners deciding which language best suits their preparation and interview strategies.

Challenge your expertise in Java REST APIs with advanced Spring Boot concepts, including dependency injection, REST controllers, exception handling, and security. This quiz is designed for learners preparing for high-level interviews that focus on building scalable and robust backend services.

Put your Java knowledge to the test with questions on OOP principles, collections, multithreading, exception handling, and advanced features often asked in interviews. This quiz is designed for learners preparing for their first Java interview and aiming to tackle master-level challenges with confidence.

Test your knowledge of fundamental Java interview questions designed for freshers. This quiz covers core concepts such as OOP, exception handling, Java features, and basic syntax to help you prepare for entry-level Java programming roles.

Test your fundamental knowledge of Java and Spring Boot with this beginner-friendly multiple-choice quiz. Covering core Java topics, collections, exceptions, streams, and basic Spring Boot concepts, this quiz is ideal for interview preparation and self-assessment.

Test your understanding of essential artificial intelligence interview questions and answers. This quiz covers AI concepts, machine learning types, intelligent agents, algorithm basics, and foundational AI interview topics—helping candidates review and prepare for AI engineering and data science roles.

Test your understanding of key database indexing concepts, including composite and covering indexes, and how to interpret output from the EXPLAIN command. This quiz is designed to help beginners evaluate their knowledge of efficient query performance, indexing strategies, and query optimization.

Practice key Java array concepts, including element updates, shifting, reversing, and applying in-place algorithms for efficient memory use. This quiz is designed for learners preparing for coding interviews where mastering array manipulation is a must-have skill.

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.

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.