Learn how to work with this Java Annotation retention and reflections example in order to create your own generic components! Make your code flexible and reusable with these powerful concepts!
Learn important principles of stream, parallel and forEachOrdered to improve your Java skills! Go deeper into Java Streams concepts by figuring out this Java challenge! Try to solve it before seeing the answer. Remember, you will acquire a new skill...
Use try catch with Exception and Error by using the new try with resources feature from Java 9 by not declaring the Exception into the try block! Take this Java Challenger and be able to use the full power of it! Master recent Java versions by...
Master the Type Erasure and Bounded Types Generics concepts by having fun with this new Java Challenger presentation!
Check it out the new features with interfaces available with Java 9! Go deeper into Java 9 concepts by figuring out this Java challenge. Try to solve it before seeing the answer. Remember, you will acquire a new skill much faster when you struggle...
Solve this Java Challenge about Optional and improve your Java skills! If you want to take the Java certification, the Java Challenges will massively help you to achieve that! Check out the Optional Java Challenge and try to solve it as well...
Method Naming – What is the problem? Method names that don’t describe what they are expected to do are confusing. There are methods that are the “Mr. Know-It-All ” – they do everything you could imagine: they create, update, save...
Introduction Let’s be honest: there is a lot of really bad code out there. The tsunami of bad code cannot be overcome by the relative handful of gurus who have mastered code craftsmanship. Books become outdated, and the examples in training...
Do you remember how to use the Swing API with action events? If not, refresh your memory here: When using the Swing API you also use the Observer pattern maybe even without realizing it. The Observer pattern enables us to decouple the observed...
To make code flexible and easy to maintain we must find a way to encapsulate and not repeat the code. What if we need to do a specific treatment every time we get an Exception? Would we repeat this code in the entire application? We could, but...