Learn how to use synchronous and asynchronous callbacks in Java—including callbacks with lambda expressions, CompletableFuture, and more.

However, I still have a question about the use of interfaces.<br><br>I understand that the interface let's you identify what methods will be required in classes that implement the interface.

Learn how to use the Command pattern to encapsulate requests as objects that you can execute alone or in sequence in your Java programs.

There are a variety of other interesting Java command-line interface tools packaged within the bin directory of JDK, and it is in the best interest of every Java developer to investigate them and ...