For example, the following Java class uses JOptionPane’s showInputDialog() method to prompt for user input, and then displays a message back to the user with the showMessageDialog() function.

Here's a quick look at the three types of class loaders and everything you need to know to work with them in your Java programs.

In Java, nested classes are categorized as either static member classes or inner classes. Inner classes are non-static member classes, local classes, or anonymous classes.

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.