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

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.

Learn seven advanced techniques for working with fields and methods in Java, including recursion, method call chaining, pass-by-value arguments, and rules for calling methods ...

Method references: A primer My previous Java 101 tutorial introduced lambda expressions, which are used to define anonymous methods that can then be treated as instances of a functional interface.

Must qualify the allocation with an enclosing instance of type GameTree (e.g. x.new A () where x is an instance of GameTree). GameTree.java line 146</pre> ...