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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 in Java & packaged as war or ear files and

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♦ 9 JNDI and LDAP interview Q&A

Q1. What is JNDI? And what are the typical uses within a JEE application? A1. JNDI stands for Java Naming and Directory Interface. It provides a generic interface to LDAP (Lightweight Directory Access Protocol) and other directory services like NDS (Novell Directory Service), DNS (Domain Name Service) etc. It provides…...

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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 executed. The types of statements are: Statement (regular statement as…...

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♦ 16 FAQ JMS interview questions & answers

Q1. What types of messaging paradigms are provided by JMS? A1. Point-to-Point: provides a traditional queue based mechanism where the client application sends a message through a queue to typically one receiving client that receives messages sequentially. A JMS message queue is an administered object that represents the message destination…...

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♦ Client-side & Server side view technologies interview Q&As

Q1. What do you understand by client side and server side view technologies? A1. There are client side & server side view technologies available. Server side view technologies In server-side view technology the most of the page rendering happens on the server side. The server side view technologies are JSPs,…...

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♦ 4 JSF interview Q&A

Q1. What are the 6 key phases of JSF? What other frameworks would you use with JSF, and in which phases do they fit in? A1. JavaServer Faces (JSF) brings a new paradigm to developing Web-based applications in Java. However, it has a number of gaps in its out-of-the-box state.…...

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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 What are the differences between both approaches? A1. SOAP WS

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Posted in FAQs Free, FAQs Java Web Services, Java Design & Architecture FAQs, WebService
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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 the state information between different page requests as follows: HTTP…...

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01: ♦ Q07 – Q12 Java Micro & Web services Interview Q&As

Extends Java Web Services Basics Interview Q&As – Q17 – Q06. Q7. What is a microservice architecture (aka MSA)? A7. Martin Fowler defines Microservices as a subset of Service Oriented Architecture (SOA). In SOA, the services can be of any size. In a microservice, the service performs a single function.…...

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01: ♦ Q13 “12 Rules” for REST API design & development

These are more like rules to develop RESTFul web services as opposed to being the best practices. REST is an architectural style without any contracts or specifications. So, it is imperative to apply the following rules for better REST API design. #1. Write stateless RESTFul services This means each request…...

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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 a simpler alternative to Simple Object Access Protocol (SOAP) and…...

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02: HTTP basics on headers, MIME types, & cookies for Java developers

Q1. What happens when you open up a browser and type a URL to request a Web page or RESTFul web service data? A1. HTTP is a stateless protocol on top of TCP (Transmission Control Protocol). 1) When the IP address is obtained, the browser will attempt to open a…...

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02: JDBC with MySQL, Datasource, and connection pool Tutorial

Step 1: pom.xml file with commons-dbcp2 for the connection pooling and abstraction layer for the datasource. db.properties for connection details Step 2: Create a new source folder “src/main/resources”. Step 3: Define the MySQL database “learnjavadb” connection properties in a new file named “db.properties” under “src/main/resources”. Using the “MysqlDataSource” Step 4:

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03: ♥ JAX-RS how to create a RESTFul Web Service in Java?

Q. What are the high level steps in developing a RESTful web service in Java? A. You can see the complete tutorial in the tutorials section. This post is to quickly explain the major steps at the job interview. Knowing all the basics is of no use if you can’t

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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. The web browser establishes a socket connection to the host…...

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