Some Common Java Developer Interview Questions In 2021 Onward

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If you are a software developer currently looking for a job, these are some common questions that the interviewers usually ask you. So, you better prepare.

The question in the interview process will range from basic to technical questions. The basic questions will assess your experience in your previous job. If you are just a fresh graduate, you just have to tell them about the internship and your contribution. If you are already working in a company, again the principle to answer all the questions is the same, just share your contribution on the team of your company that you work before.

In my experiences applying for a software developer job, there’s not going to be tricky questions actually, it rarely happens.

Tell me about yourself?

This question is simply asking your experiences in the software development industry, just it, nothing else. To answer this question, you need to tell in detail what’s So as relax as you can, tell the interviewer about the following key.

Current role/job

Just describe yourself the role or your job that you are currently doing, if you are still working. Something like, “I have been doing this project, my role is to work with a team of members. Working using Java”

Past experiences

Describe what project you have done. You can say many things in detail about the tech stack you are using based on those past experiences.

Future target

Tell the interviewer about your interest in the company, that you are begging to join the company. And also, a little bit about how you are willing to work hard if you are accepted in the company.

Some technical questions to assess your experiences level of Java developer


There are tons of different possible questions about Java programming, but if you are experienced enough you are going to find a way to answer all the technical questions, maybe not as perfect as the interviewer expects, but at least you don’t freeze and say you don’t know.

But here are some more general questions that I found very common to ask by the interviewer.

1. Explain the same testing method? Unit test, integration test, smoke test?

Unit test is a type of test which specifies one point of the contract, it tests a single method of a class.

Integration test will Test if your code is correct for inter-operation of multiple subsystems. You can test an integration test between two or more classes, or testing integration with different production environments.

Smoke test or usually considered sanity check is a simple integration test where we just check whether your project will not blow up if it is under test, whether it returns normally or not.

2. Explain the SOLID principle?

SOLID Principles is an acronym you can read here from my previous blog post about SOLID Princilpe. it is a coding standard that a java developer should have a clear concept for developing a java project, it avoids a bad design. If you are applying SOLID properly, your codes can be more extendable, easier to read, and better to read by other team members.

3. Explain Agile methodology?

This a software development methodology, Agile is a way to manage a project by breaking it up into several phases that involves constant collaboration with customer, manager, and developer. It practices continuous improvement at every stage. The work begins then all the projects passed to other teams in a cycle through a process of planning, executing, and evaluating.

Are there any questions?

Maybe you think it’s not important, but it’s actually part of the interview process. So, if you have questions no matter what it is, you will stand out from other candidates, especially some types of questions that they think you're curious about the company. The last questions usually will be asking you if you have any questions, if you answer no, then you fail at this test.

That willing to work hard, long term, ask what the company will offer?

“If I work hard in this position, in this company, what will my future in this company look like a year from now?

Conlusions

It’s better to answer all the questions with relaxation and be as honest as possible, because if you are answering something out of your reach, you are going to mess yourself up and chances are you will fail.

There’s no guarantee even if you have brilliant ways to answer the question by the interviewer, because they will compare your resume with other candidates, even if you are good at the interview process it won't matter if the other candidate is more experienced and suited for the job then you are.

Better to build your experience working on some small companies, you will have the experience and put it in your resume. Also, some reputable certification is also very important to put in your resume, maybe you can start by doing some certification. If you fail, please don’t be worried and sad, there’s always next time, there’s always another company that needs a software developer, and maybe you don’t need a job, you just have to create your own job, that’s even better.

Elon Musk says, why he built his own company is because He’s tired of getting rejected when he's applying for a job.

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