Get a deep dive into using method references in your Java programs, including stream operations, event listeners, and constructors and factories.

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

We discuss how to work with directories, sub-directories, and traverse them using Java and the DirectoryStream method. Learn more.

I have an interface that returns a class containing common classes. But where do I define the class? What I want is something like: public interface Foo { String getName(); FooType getFoo(int a ...