Create packages, import packaged classes and interfaces into your programs, move packages, and encapsulate them in jar files.

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

To address the shortcomings of this approach, Java 1.1 introduced the concept of anonymous inner classes. Benefits and drawbacks to anonymous inner classes An anonymous inner class allows developers ...

If you want to master functional programming, the best place to start is with the Java Function interface. This example will show you four different ways to implement this functional interface in your ...