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Q01-Q28: ♦ Top 50+ EE Java interview questions & answers

Q1. Can you describe the high level architecture of the application that you had worked on recently? or Can you give a 100 feet bird’s eye view of the application you were involved in as a developer or designer? A1. The focus is on judging your experience in Java/JEE. The…...

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Q43-Q54: ♦ Top 50+ Core on Java Objects Interview Questions & Answers

Q43. What can you tell about the performance of a HashMap compared to a TreeMap? Which one would you prefer? A43. A balanced tree does have O (log n) performance. The TreeMap class in Java maintains key/value objects in a sorted order by using a red-black tree. A red-black tree…...

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Q37-Q42: ♦ Top 50+ Core on Java Garbage Collection Interview Questions & Answers

As a Java developer, you may not need to know how the JVM works, but the most important topic that you must know is Java Garbage Collection. How the Garbage Collection and object referencing work in Java. Top 50+ Core Java Interview Questions Links: Q01-Q10 | Q11-Q23 on OOP |…...

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Q24-Q36: ♦ Top 50+ Core on Java classes, interfaces and generics interview questions & answers

Focus is on Java classes, interfaces and generics the interview questions and answers style. Java classes and interfaces are the building blocks. Top 50+ Core Java Interview Questions Links: Q01-Q10 | Q11-Q23 on OOP | Q37-Q42 on GC and referencing | Q43-Q54 on Objects Q24. What happens when a parent…...

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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 the bird’s eye view of the last application you had…...

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♥ 14 Unix interview questions & answers for Java developers

Q1 How do you remove the Control-M characters from a file? A1 Using the sed command that replaces Control-M with nothing Note: The ^M is typed on the command line with ctrl+v and ctrl+M Q2 How will you search for a property named “inbox” within a number of .properties files

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♦ 6 JSON interview Q&A

Q1. What is JSON and how does it differ from an XML? A1. JSON (JavaScript Object Notation) is a lightweight, text-based, language-netral like XML, but less verbose than XML data exchange format. JSON is used in Web services to exchange data between client and server. Client makes ajax requests to…...

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XML Processing Interview Q&A

Q1. What libraries can you use in Java to process XML documents? A1. #1. DOM Parser loads the whole XML structure into memory, and you can read and write. This is useful for smaller XML documents which don’t impact memory usage. JDOM is another alternative to DOM4J. #2. SAX Parser…...

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♦ JavaScript mistakes interview Q&A

Q1. What are the common JavaScript errors or bad practices that you have noticed? A1. 1) Not having proper namespaces and not using AMD (i.e. Asynchronous Model Definition) API to modularize the Java code for improved maintainability. 2) Not using the var to declare your variables. If you don’t use…...

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♦ JavaScript Vs Java interview Q&A

The client-side JavaScript based MVW (Model View Whatever) frameworks like AngularJS, Backbone, CanJS, Ember, etc have become mainstream and replacing server side Java based frameworks like JSF, Struts, Spring MVC. So, time to get a better handle on JavaScript and market yourself as a full stack Java developer. Q1. What

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XML basics interview Q&A

Q1. What is an XML? A1. XML stands for eXtensible Markup Language. XML is a grammatical system for constructing custom markup languages for describing business data, mathematical data, chemical data etc. XML loosely couples disparate applications or systems utilizing JMS, Web services etc. XML uses the same building blocks that…...

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03: ♦ 9 Core Java Concepts you can’t afford to not know

Q1. How will you go about explaining the following Java concepts to a beginner who is starting to learn Java? 1. Process Vs Threads 2. Heap versus Stack 3. Local variables versus instance variables 4. How do threads communicate with each other? 5. Are Java methods reentrant? 6. Does Java…...

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More JSF interview Q&A

Q1. What is the difference between initial request and postback? A1. Initial request (e.g. HTTP GET) is the request that is made from a browser in order to display a page. Postback happens when the browser posts the page back to the server with form values, etc. Initial request is…...

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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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02: 7 More Maven interview Questions & Answers

Q1. How will you go about creating master builds or releases using Maven? A1. Step 1: Log into the server that has maven set up to perform release builds. Step 2: You need to checkout the fresh copy of the artifacts that you are going to build. For example, if…...

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