Skip to contentSkip to footer

Java Developer Interviews

Salaries
Interviews

Java Developer Interview Questions

In your interview for a java developer position, be prepared to answer technical questions that test your understanding of Java basics. Interviewers may also ask open-ended questions to assess your coding and problem-solving abilities. Prepare for non-technical questions that focus on time management, interpersonal communication, and work ethic.

Top Java Developer Interview Questions & How to Answer

Question 1

Question #1: What is the difference between HashTable and HashMap in Java?

How to answer
How to answer: Interviewers use technical questions to assess your formal training and understanding of the Java programming language. Use your answer to demonstrate your communication skills. Even if you have been coding for some time, it can be helpful to review Java basics before your interview.
Question 2

Question #2: Write a program to determine if 243 is an Armstrong number.

How to answer
How to answer: Interviewers use open-ended questions to test your coding skills. This question allows the employer to assess your ability to solve a problem using a Java algorithm. Explain your thinking process as you use a code editor or whiteboard to solve the problem.
Question 3

Question #3: How do you produce quality code when you have several Java projects to complete at once?

How to answer
How to answer: Java developers often juggle multiple projects at the same time. Interviewers use questions such as this to test your time management and organizational skills. Employers are also trying to assess your commitment to quality work. If you have experience as a developer, include examples from your work history that demonstrate high-quality work and effective time management.

30,868 java developer interview questions shared by candidates

I'm writing it to share my experience with Bairesdev recruitment. Last year April/May I applied on Linkedin for a Java position. Instantly, I was invited for online tests. After finishing there was introductory interview with recruiter. Then they arranged a technical interview. After this interview there was communication from Bairesdev time to time asking me if I was still available or not, they may call me anytime. In the meantime, recruiter changed, I was introduced to new recruiter. As it was already quite long time, I inquired about it in February. I received instant reply from a new recruiter, he said I was in queue getting a call soon. Then the pandemic started and I thought this process may get late. However, I again contacted on September and that same guy from last communication told me that I have to apply for Bairesdev job again. So then I looked for some suitable openings from Bairesdev on Linkedin and sent mail to their jobs mail and received invite for same tests that I went through last year. I explained in reply that I already completed this process last year and was waiting to be hired. If they want to further check my skills, they can give me some assignments/tasks, what's the point going the same process again. The guy repeated the same thing in reply that I have to go through those same tests. Finally, I decided to quit. The whole story is now almost one and half year long. So, I would request people to be cautious, it may turn out to be waste of valuable time. Thanks
avatar

Java Tech Lead

Interviewed at BairesDev

4.2★
Oct 8, 2020

I'm writing it to share my experience with Bairesdev recruitment. Last year April/May I applied on Linkedin for a Java position. Instantly, I was invited for online tests. After finishing there was introductory interview with recruiter. Then they arranged a technical interview. After this interview there was communication from Bairesdev time to time asking me if I was still available or not, they may call me anytime. In the meantime, recruiter changed, I was introduced to new recruiter. As it was already quite long time, I inquired about it in February. I received instant reply from a new recruiter, he said I was in queue getting a call soon. Then the pandemic started and I thought this process may get late. However, I again contacted on September and that same guy from last communication told me that I have to apply for Bairesdev job again. So then I looked for some suitable openings from Bairesdev on Linkedin and sent mail to their jobs mail and received invite for same tests that I went through last year. I explained in reply that I already completed this process last year and was waiting to be hired. If they want to further check my skills, they can give me some assignments/tasks, what's the point going the same process again. The guy repeated the same thing in reply that I have to go through those same tests. Finally, I decided to quit. The whole story is now almost one and half year long. So, I would request people to be cautious, it may turn out to be waste of valuable time. Thanks

In 1st F2F round they will ask basic questions from OOPS, Multithreading, Collections, SQL, JOINS, and about the project you have mentioned in the resume, (I have mentioned based on Spring MVC, Spring Boot). So the questions were from there. 2nd F2F was almost same with some additional questions from RESTFul web services
avatar

Java/J2EE Developer

Interviewed at STMicroelectronics

3.8★
Jun 21, 2019

In 1st F2F round they will ask basic questions from OOPS, Multithreading, Collections, SQL, JOINS, and about the project you have mentioned in the resume, (I have mentioned based on Spring MVC, Spring Boot). So the questions were from there. 2nd F2F was almost same with some additional questions from RESTFul web services

Viewing 1341 - 1350 interview questions

Glassdoor has 30,868 interview questions and reports from Java developer interviews. Prepare for your interview. Get hired. Love your job.