There are many concepts involved in Java Challenges! In essence, we will continue exploring lambdas and the Function interface the most.
However, we also have static methods introduced in Java 8 and the private method in interfaces introduced in Java 9. In the invocation of the interface methods, we are using anonymous inner classes too!
Are you ready for the next Java Challenge? Less introduction, more action, try out this Java Challenge, and master Java concepts by having fun!