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’s main function Java’s main method is composed of six terms — three reserved words, the main method name, a reference type and a variable name: public – Java’s main function requires a public ...

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

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