This post explains how to use classes in Java to build objects and organize your code. Also learn: constructors, static methods, and more!

Use Java assertions to test your assumptions about program correctness and check them in your code.

Use Java method modifiers to avoid public method antipattern Follow best practices for Java method design, and don't allow one public class to call another. If you skipped this step, be prepared to ...

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.