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.

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.

Java Development Kit (JDK) 11 is now generally available and ready for production use, bringing productivity improvements and an HTTP client API that implements HTTP/2.