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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.
30,830 java developer interview questions shared by candidates
1. You have two candles each candle can burn for 60 minutes, by using that two candles how will you find 90 minutes. 2. How many pieces of a cake you can cut by using 3 strokes of knife.
opps concepts jdbc advan java servlets
What are you top 3 weaknesses and your top strength?
If a number divisible by 5 print 'hello'. If a number divisible by 7 print 'Alexa'. If a number divisible by both print ' hello alexa'
I didn't get unexpected questions. All question were related to my technical skills and to my previous working experience
what is OOP? Threads? Servlet?
Second round (programming pen & paper test) : 1) again I don't remember this exactly but I want to give you the idea of the question: In an inland there are white and black rats live. Both of these kind of rats have certain life span and it is as follows: White rats, At the end of the: 1) First year, white rats give birth to 2 rats 2) Second year, white rats give birth to 3 rats 3) Third year, it dies Black rats, At the end of the: 1) First year, black rats give birth to 3 rats 2) Second year, black rats die. Design a way to calculate the difference of their population if positive number N is the year and positive integer K is the initial number of rats. The output can be a large value so print it with the modulo of 10007. --------------end of the question------ Thats it. I think I have given you the most exact question asked in this round( ~98% accurate) 😁.
Define java exceptions
write a program to find out suffix of two strings are same
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