The Java Language Specification (JLS) is being updated with a more flexible launch protocol to offer greater flexibility in declaring a program's entry point and to allow instance main methods.

Say goodbye to the public static void main method in Java 21 with the unnamed classes and instance main methods preview features.

You’ll also learn how the interface has evolved in Java 8, with the addition of default and static methods, and in Java 9 with the new private methods. These additions make interfaces more ...