These are must know Java interview FAQs. If you don’t get these Java interview questions right, you will not be getting an offer.
Q1. What is the difference between “==” and “equals(…)” in comparing Java String objects?
A1. When you use “==” (i.e.
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As an enterprise Java developer, you will be spending more time integrating systems via Java web services & messaging. Java Web Services interview questions are must know for the Java developers.
Q1. What are the different styles of Web Services used for application integration?
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One of the very frequently asked open-ended interview questions for anyone experienced is:
Can you describe the high-level architecture of a recent application you had worked on?
⏯ Java based high-level architecture & Integration Styles Interview Q&As Video.
You will be asked:
1) to draw an architectural diagram on a white board and
2) to provide a brief description of the architecture,
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Have you seen job advertisements requiring Java candidates to work in low latency, high throughput, real-time and distributed systems with share-nothing architectures? Wondering what questions you will be asked? If you are an experienced Java developer targeting high paying skills then it pays to get a good handle on Java low latency interview questions &
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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.
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Spring interview questions are very common for the Java programmer jobs.
Q1. What do you understand by the terms Dependency Inversion Principle (DIP), Dependency Injection (DI) and Inversion of Control (IoC) container?
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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?
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Auto-unboxing, switch, short circuit logical operators & exception handling are core Java basics that sometimes lead to obscure errors if not understood well & often tested in coding tests.
Q1. What is wrong with this code?
A1. compile-error at switch(i) as switch works only with “int”
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Apologies for the echoing, and it has been rectified in the other videos.
Relevant Links
1. Spring DIP, DI, & IoC interview questions and answers.
2. 13 Spring basics interview questions & answers.
3.
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Q1. Can you describe the Spring Web MVC framework architecture?
A1. Spring Web MVC framework provides a Model View Controller architecture to develop loosely coupled 1) web applications 2) RESTful web services.
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Production issues seek the attention of middle and top level management. Often these are intermittent issues that are harder to reproduce in lower environments without the right know-hows & tools. Some will shrug it off as “Cannot be reproduced“,
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These 17 beginner Java interview questions & answers are not only for the entry level job interviews, but also get a good grasp of the beginner level Java concepts.
Q1. Why use Java?
A1. Java is a very popular language as per the TIOBE index.
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Functional Programming (i.e. FP) is prevalent in Big Data (i.e. Spark programming, etc) roles. A must know for Big Data Engineers and Analysts.
One needs to get used to the transformation from imperative programming to functional programming. You like it or not,
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Mechanical Engineer to self-taught Java engineer within 2 years & a freelancer within 3 years. Freelancing since 2003. Preparation empowered me to attend 190+ job interviews & choose from 150+ job offers with sought-after contract rates. Author of the book “Java/J2EE job interview companion“, which sold 35K+ copies & superseded by this site with 2,050+ registered users. Amazon.com profile | Reviews | LinkedIn | LinkedIn Group | YouTube
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