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

The former method is executed by default methods a() and b(), and the latter method is executed by static method d(). Compile Listing 21 (javac PMDemo.java) and run the application (java PMDemo).

Here's how to make classes, fields, methods, constructors, and objects work together in your Java programs.

Hiding Java method deprecation problems There are plenty of deprecated methods in Java, and there’s nothing stopping you from calling them. Sure, a yellow yield sign might appear in the line-number ...

Peter's convinced you're not using Shared and static members enough, but then he's also convinced that none of you know about all the ways you can use those two keywords.

This is an in-depth java tutorial for beginners. Learn what Java is, how to get started, and how to build basic apps using key concepts!