Functional interfaces in Java are crucial to master. In this Java code challenge, we will explore the Supplier and Consumer functional interfaces. Do you know how a lambda behaves in Java? Try to solve this Java code challenge and make sure you know it! Otherwise, you will learn, anyway, it will be a win-win!
Without further ado, let’s go to the Java Challenge!
lambda expression can use final or effectively-final variable , in this code how its increment jokerCraziness variable ?
https://www.baeldung.com/java-lambda-effectively-final-local-variables i found my answer here