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♥♦ 8 Java EE (aka JEE) Overview interview questions & answers

Q1. When a company requires Java EE experience, what are they really asking for? A1. Java EE (i.e. Enterprise Edition) is a collection of specifications for developing and deploying enterprise applications. In general, Java enterprise applications refer to applications written

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♦ 12 FAQ JDBC interview questions and answers

Q1. What are JDBC Statements? What are different types of statements? How can you create them? A1. A statement object is responsible for sending the SQL statements to the Database. Statement objects are created from the connection object and then…...

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♦ 15 Database design interview Questions & Answers

Q1. What is normalization? When to denormalize? A1. Normalization is a design technique that is widely used as a guide in designing relational databases. Normalization is essentially a two step process that puts data into tabular form by removing repeating…...

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♦ 14+ SQL interview Questions & Answers

SQL interview Questions & Answers is a must for any developer as all non-trivial applications need to talk to a database with CRUD operations. Q3 is the most popular. Q1. Can you explain DDL statements in regards to SQL? A1.…...

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001A: ♥♦ 7+ Java Interview Q&As on high level architectures & integration styles

One of the very frequently asked open-ended interview questions is – Can you describe the high-level architecture of the recent application you had worked on from a 100 feet? You will be asked to 1) draw a diagram on a

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001B: ♦ Q&As on high level Java architectural patterns

Continuation of Java architecture interview Q&A with integration styles & architecture diagrams – part 1 Q3. Can you discuss some of the high level architectures you are experienced with? A3. Be prepared for a white board session on architectures, especially…...

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01: ♥♦ Q01 – Q06 Java Web Services Interview questions & answers

As an enterprise Java developer, you will be spending more time integrating systems via web services & messaging. Java Web Services interview questions are very popular. Q1. What are the different styles of Web Services used for application integration? and

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01: ♥♦ Q01 – Q07 Hibernate interview questions & answers

Q1. What is an Object-to-Relational Mapping (i.e. ORM) tool? A1. There are several ways to persist data to a database from your Java applications. 1) Direct JDBC SQL statements for the CRUD (Create, Read, Update, and Delete) operations. Direct JDBC

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01: ♥♦ Q01 – Q07 Spring interview questions & answers

Q1. What do you understand by the terms Dependency Inversion Principle (DIP), Dependency Injection (DI) and Inversion of Control (IoC) container? A1. The differences are very subtle and can be hard to understand. Hence, explained via code samples. 1) Dependency

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01: ♥♦ Spring DI & IoC interview Q&As

Video: Spring DIP, DI, and IoC. This extends 13 Spring interview questions & answers. Q1. What do you understand by the terms Dependency Inversion Principle (DIP), Dependency Injection (DI) and Inversion of Control (IoC) container? A1. Dependency Inversion Principle (DIP)

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01: ♦ 12 Web basics every Java web developer must know

Q1. HTTP is a stateless protocol, so how do you maintain state? How do you store user data between requests? A1. This is a commonly asked interview question. The “http protocol” is a stateless request/response based protocol. You can retain…...

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02: ♦ 6 Java RESTful Web services Interview Q&A you must know

Q1. What is RESTful Web service, and why is it favored over SOAP Web service? A1. REST stands for REpresentational State Transfer (REST), which is a stateless software architecture that reads webpages containing XML, JSON, Plain text, etc. REST is…...

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03: ♦ 21+ Java Servlet interview questions & answers

Q1. What is a Servlet? Is a Servlet inherently multi-threaded? A1. A Servlet is a Java class that runs within a web container in an application server, servicing multiple client requests concurrently forwarded through the server and the web container.…...

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04 ♦ 17 Spring bean life cycles & scopes FAQ interview Questions & Answers

Q1. Does Spring dependency injection happen during compile time or runtime? A1. Runtime during creating an object. Q2. What is the difference between prototype scope and singleton scope? Which one is the default? A2.Singleton means single bean instance per IoC…...

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09: 11 SOAP Web service interview questions and answers

SOAP Web Services interview Questions & Answers Links: 6 Java RESTful Web services Interview | 5 JAXB interview Questions & Answers | Java Web Services interview Questions & Answers Q1. What are the different approaches to developing a SOAP based…...

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4 more Java EE overview interview questions and answers

Q1. How does the new bean validation framework avoid duplication across multiple Java EE layers? A1. Developers often code the same validation logic in multiple layers of an application, which is time consuming and error-prone. At times they put the…...

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8 JPA interview questions and answers

Q1. What is a JPA? What are its key components? A1. The process of mapping Java objects to database tables and vice versa is called “Object-relational mapping” (ORM). The Java Persistence API provides Java developers with an object/relational mapping (ORM)…...

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Q29-Q53: ♦ Top 50+ EE Java Interview Questions & Answers

This extends Q1 – Q28 EE Java interview Questions and Answers Q29. What are the different ways can you wire up your dependencies using Spring? A29. 3 different ways. You can combine all 3 ways. Using an XML based application…...

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