Strong typing and the var keyword Java’s var keyword reduces the verbosity and ceremony surrounding the declaration of local variables, but it does not sidestep any rules about the platform’s strong ...

Abstract classes and interfaces in Java serve fundamentally different purposes. Learn the differences between these Java language elements and how to use them in your programs.

In Java, printf is recommended as a replacement for calls to the print or println methods. How do you format output with Java printf? To format text based output with the Java printf method, follow ...

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

Java 11 is getting long in the tooth, so many developers are moving to the next oldest version that's still supported, Java 17. Here's what's different.