A Kotlin class behaves just like a Java class, but without requiring that ... outputs “4” It’s an interesting design difference between requiring a visibility declaration, as Java does ...

You cannot prevent other developers from extending certain classes. A method might accept a specific type and its subclasses, but you want to restrict usage to a select few implementations of your own ...

Community driven content discussing all aspects of software development from DevOps to design patterns. Instance main methods and unnamed classes, coming in Java 21, will forever change how developers ...

and improve the overall quality of your Java applications. Records can be applied with Domain-Driven Design (DDD) principles to write immutable classes, and create more robust and maintainable code.

Developers who are new to Java can sometimes have trouble with class and package naming. In fact, the introductory Java forums are filled with threads starting with questions about these areas of ...