Developed in the 1990s and still the most in demand language, Java is the gold standard in web development all over the world, in every area. It’s object oriented, class based and works on any platform, making it extremely versatile. If you want to make your safe employable to pretty much every tech company in the world, this is the way to go. Fun fact: Java was originally intended for interactive television, but its creators soon realised it was too far ahead of its time for that particular industry. The rest is history.