The Optional concept is present in many other programming languages. The main goal of the Optional class is to avoid NullPointerException. It’s much easier to deal with null values when we use the concepts of an Optional. In this challenge, we...
Learn deeply concepts from Java core and improve your code quality! Do you know how constructors, static block and instance block behave? Find out on this Java Challenger! Remember, the better you know Java the better your code will be!
Master the use of the takeWhile and dropWhile methods with ava 9 by solving a fun Java Challenge! Be ready to use the full power of Java!