Updating a hashmap
You can keep design patterns also on the same list but growing number of an experienced programmer are now well aware of GOF design patterns and when to use them.I have also worked hard to keep this list You guys are also lucky that nowadays there are some good books available to prepare for Java interviews, one of them which I particularly find useful and interesting to read is Java Programming Interview Exposed by Markham.It will take you to some of the most important topics for Java and JEE interviews, worth reading even if you are not preparing for Java interview.So now the time has come to introduce you to this MEGA list of 120 Java questions collected from various interviews of last 5 years.Basically, Java Memory model inserts a write barrier after you write to a volatile variable and a read barrier before you read it.
why I like that question, what makes them challenging and what kind of answer you should expect from candidates.No matter whether you are a Java developer of 1, 2, 3, 4, 5, 6, 8, 9 or even 10 years of experience, you will find something interesting in this list.It contains questions which are super easy to answer, and also, a question which is tricky enough for even seasoned Java programmers.If you need more questions then you can also check out this Java Interview Guide: 200 Interview Questions with Answers Given the list is long and we have questions from everywhere, it's imperative that answers must be short, concise and crisp, no fluffing at all.So apart from this paragraph, you will only hear from me is the questions and answers, no more context, no more feedback and no more evaluation.
concurrency, algorithms, data structures and coding. Since I like to explore interview questions, I have got this huge list of questions with me, which contains lots and lots of questions on different topics.