Java 8 INTERVIEW CODING QUESTIONS 2024
Top Java 8 Interview Coding Questions for 2024
Java 8 INTERVIEW CODING QUESTIONS 2024
Java 8 Interview Coding Questions in 2024 may include topics such as lambda expressions, streams, functional interfaces, and other features introduced in Java 8. Candidates may be asked to demonstrate their understanding of these concepts through practical coding exercises, such as filtering, mapping, or reducing data using streams, implementing functional interfaces, or integrating lambda expressions in their code to achieve desired functionality efficiently. Along with technical proficiency, candidates are often assessed on their problem-solving skills, code quality, and ability to write clean, concise, and maintainable code. Practice and understanding of Java 8 features are crucial for excelling in these coding challenges and showcasing one's proficiency in modern Java programming.
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1 - Lambda Expressions: Java 8 introduced lambda expressions, which allow you to treat functionality as a method argument. Students may be asked to demonstrate understanding of lambda expressions and how to use them in various scenarios.
2) Streams: Java 8 also introduced the Stream API, which allows developers to work with collections in a more functional style. Students might be required to perform operations on streams such as filtering, mapping, and reducing.
3) Functional Interfaces: Java 8 introduced the concept of functional interfaces, which have a single abstract method. Students should be able to create and work with functional interfaces, such as Predicate, Function, and Consumer.
4) Method References: Method references provide a way to refer to methods or constructors using lambda expressions. Students might need to demonstrate the use of method references in their code.
5) Optional: The Optional class in Java 8 provides a way to avoid null pointer exceptions. Students might be asked to write code that utilizes Optional to handle potentially null values.
6) Default Methods: Java 8 allowed interfaces to have default methods, which provide a way to add new methods to existing interfaces without breaking the implementing classes. Students should understand how to use default methods in interfaces.
7) Parallel Streams: Java 8 introduced parallel streams, which allow operations on streams to be executed in parallel. Students may be asked to demonstrate how to create and work with parallel streams.
8) Date and Time API: Java 8 provided a new Date and Time API that is more comprehensive and flexible than the legacy Date and Calendar classes. Students should be comfortable working with the Date and Time API in Java 8.
9) New features in Collections: Java 8 introduced several new features in the Collections API, such as forEach method, removeIf method, and merge method in Maps. Students may be tested on their understanding and usage of these new features.
10) Functional Programming Concepts: Java 8 brought functional programming concepts to the language, such as immutability, higher order functions, and pure functions. Students should be familiar with these concepts and how they are applied in Java 8.
11) Testing with Lambdas: Students might be required to write test cases using lambda expressions and functional interfaces to demonstrate their understanding of how to test functional code.
12) Handling Exceptions: Java 8 introduced new ways to handle exceptions, such as the `CompletableFuture` class for handling asynchronous exceptions. Students should be able to demonstrate how to handle exceptions effectively in Java 8 code.
13) Java 8 Features for Concurrency: Students may be asked to write code that demonstrates the use of Java 8 features for handling concurrency, such as CompletableFuture, Executors, and the Fork/Join framework.
14) Working with Files: Java 8 introduced new methods in the Files class, such as lines() for reading lines from a file as a Stream. Students should be able to use these new file handling methods effectively.
15) Integration with other Technologies: Java 8 features such as Streams, Lambdas, and CompletableFuture can be integrated with other technologies like Spring, Hibernate, or other frameworks. Students may be tested on their ability to integrate Java 8 features with other technologies.
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Java Concurrency Interview Questions 2024
