This year Java hit an incredible milestone and reached the grand old age of 25 years. We celebrated its jubilee by running a special online Java day event, where lots of expert speakers shared their experience and gave tips and tricks on how to get more from the language. This got us thinking, and we decided to do a deep dive into the data to discover once and for all what the common state of Java is, and to help answer some of your burning questions. Some of what we have found may come as no surprise, but there are some very unexpected insights too. With Java 15 released this week, we decid