Java Developer 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.

30,885 java developer interview questions shared by candidates

The interview questions were very low standard. There were 3 rounds. Written Test followed by two rounds of discussion. After that they discussed about salary and nearest joining date in HR round . I said then when i got call through recruiter that I want 16LPA at 4.2 years of Experience. They said they have budget. I cleared all the rounds now they rejected me after 5 days giving no reasons. This company is fake. They promise you and they will call you for interview just to increase crowd and after you clear all rounds they won't come back , since you expected more CTC than their standard. Never go for interview for the, if you don't have any option then only go there. The HR of this company is fake.
avatar

Java Developer

Interviewed at Verifone

3.4
Aug 29, 2018

The interview questions were very low standard. There were 3 rounds. Written Test followed by two rounds of discussion. After that they discussed about salary and nearest joining date in HR round . I said then when i got call through recruiter that I want 16LPA at 4.2 years of Experience. They said they have budget. I cleared all the rounds now they rejected me after 5 days giving no reasons. This company is fake. They promise you and they will call you for interview just to increase crowd and after you clear all rounds they won't come back , since you expected more CTC than their standard. Never go for interview for the, if you don't have any option then only go there. The HR of this company is fake.

Majorly focused on Data structures. Have very strong knowledge on it. Fibonacci series using recursive - was asked to code Stack, linked list, doubly linked list. Real time examples. Find frequency of occurrence of a numbers in a list without using collection - was asked to code Sorting Techniques Springboot Difference between spring and springboot Oauth Java 8 features- if you have used Collection Framework What ever you have hands on upon, be strong to each bit of it... Interview seems to be easy if you know the depth of concepts.
avatar

Senior Java Developer

Interviewed at CSG

3.7
Jul 15, 2021

Majorly focused on Data structures. Have very strong knowledge on it. Fibonacci series using recursive - was asked to code Stack, linked list, doubly linked list. Real time examples. Find frequency of occurrence of a numbers in a list without using collection - was asked to code Sorting Techniques Springboot Difference between spring and springboot Oauth Java 8 features- if you have used Collection Framework What ever you have hands on upon, be strong to each bit of it... Interview seems to be easy if you know the depth of concepts.

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