stack, multithreading and other java basic questions]
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.
30,911 java developer interview questions shared by candidates
What is the difference between HashMap & HashTable?
Implement a rate limiter that upon construction is given an integer representing the number of times a target resource is accessible during a fixed 1-minute time window. The interface would declare a single method: boolean canAccess() that would return true if a resource can be accessed immediately during the current time window, false otherwise. Additional requirements: * You can't use any helper thread to maintain state. * Must maintain time complexity of O(1) * Must be thread safe.
in Ti all java core concept and what you write on resume ?
Regarding my Technologies and framework
How does priority queues and TreeMap works internally?
Java Collections and Multi threading
1)if you get 1000 requests for you api developed, but your hardware can handle only 200 then how can you handle load?
Onsite #3 Sqrt of a number within a range of tolerance
2nd round live coding: From a blank editor write a function that calculates all possible multiplications between a List of Positions and a List of Scenarios - we do not care about what these are and how the calculation works.
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