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

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.

Sealed classes in Java let developers limit the creation and use of subclasses and preserve the class hierarchy. Here is how sealed classes in Java work.

Functional supplier interface in Java tutorial There are only half a dozen classes you really need to master to become competent in the world of functional programming. The java.util.function package ...

Java is a popular programming language that every programmer should learn. This article explains much of what you need to know.

However, Java 13 does also bring dynamic class-data sharing archives, memory improvements, and a new implementation of the Java sockets application programming interface.

Today, C++, C#, Java, Visual Basic.NET and Python are popular object-oriented languages. The following compares basic OOP terms with traditional programming. See object-oriented DBMS.