Java Interview Questions

• Java Core

  Compile and Run Java Applications from the Command Line – Step-by-Step Primitive Types and Literals in Java Primitive Type Conversion in Java: Implicit and Explicit Type Casting Lesson 3 - Operators Lesson 4 - Flow Control Lesson 5 - Collections Functional Interfaces Lambda Expressions Method References Package java.util.function Functional Interface Function Functional Interface Consumer Functional Interface Supplier Functional Interface Predicate Functional Interface UnaryOperator Lesson 7 - Inner Classes Lesson 8 - Threads Lesson 9 - Strings Lesson 10 - Try-Catch and Finally Block in Java Lesson 11 - Interfaces

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• Web Services

  Lesson 1 - Basic Concepts of Web Services Lesson 2 - Using wsimport and wsgen Tools Introduction JAX-RS JAX-RS Parameter Annotations Sub-Resources JSON Support Deployment Use of @Context JAX-RS Client JAX-RS Entity Providers JAX-RS Exception Handling JAX-RS Building Responses Jersey Client XML Support Java SAX Parser: A Comprehensive Guide with Examples Java StAX: A Guide to Streaming API for XML Java XSLT: A Comprehensive Guide to Transforming XML Java DOM Parser: A Comprehensive Guide with Examples Lesson 5 - JAXP Old Lesson 6 - Java SOAP Handler in Web Services Lesson 7 - Security Lesson 8 - XML: Essential Concepts and Usage Lesson 9 - SOAP, WSDL Lesson 10 - Customizations Lesson 11 - Create WS with JAX-WS Lesson 12 - Java MTOM and MIME: Enhancing Efficiency Lesson 13 - Java WS-Addressing: A Comprehensive Guide Lesson 14 - Endpoint API Lesson 15 - Deployment Descriptor Lesson 16 - Client for a SOAP Based WS Lesson 17 - JAXB Lesson 18 - Provider API Lesson 19 - Dispatch Interface

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• Java Persistence API

  Lesson 1 - Enterprise Applications Lesson 2 - Object-Relational Mapping Lesson 3 - Collection Mapping Lesson 4 - Entity Manager Lesson 5 - Using Queries Lesson 6 - Query Language Lesson 7 - Criteria API Lesson 8 - Advanced Object-Relational Mapping Lesson 9 - Advanced Topics Lesson 10 - JPA Cache Lesson 11 - Sql Query

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Welcome to the Java Interview Preparation Page!

Here you will find an extensive list of questions and answers to help you successfully pass your Java developer interview. Our materials cover all major aspects, including Java Core, technical questions, and Java API questions.

Main Topics for Java Interview Questions:

Java Core Questions

Get acquainted with key Java language concepts such as object-oriented programming, exceptions, collections, and multithreading. These questions will help you solidify your fundamental knowledge of Java.

Java API Questions

Dive into the study of standard Java libraries, including working with collections, streams, I/O, and other important API components.

Questions for Java Developers

Explore examples of questions frequently asked in interviews for Java developers at various levels, from junior to senior.

How to Use Our Materials for Interview Preparation:

• Regular Review: Regularly practice with our questions to reinforce your knowledge and boost your confidence.
• Practical Assignments: Complete practical assignments and mini-projects to better understand theoretical concepts.
• Group Discussions: Discuss questions with colleagues or friends to gain different perspectives and deepen your understanding.

Start Preparing Today!

Utilize our extensive question bank to prepare for your Java interview and achieve success in your career. Good luck!

See also Tests.