Updating database from jtable


For that, I have already written blog posts, where you can find my views on a particular question, e.g.why I like that question, what makes them challenging and what kind of answer you should expect from candidates.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.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 has questions for both entry-level Java programmers and senior developers with years of experience.One example I have seen is having a long field in your class.If you know that a long field is accessed by more than one thread e.g.What I mean, if one thread changes the reference variable to points to another array, that will provide a volatile guarantee, but if multiple threads are changing individual array elements they won't be having happens before guarantee provided by the volatile modifier.

2) Can volatile make a non-atomic operation to atomic?

I have not only shared questions from all important topics but also ensured to include so-called advanced topics which many programmers do not prefer to prepare or just left out because they have not worked on that.