Create packages, import packaged classes and interfaces into your programs, move packages, and encapsulate them in jar files.

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

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.

Open the Netbeans software and open the Java project you want to use to connect to the database. When you open a project, a list of files and folders display in the left navigation panel.