Just What Is a JFrame?

Writing “Hello World” to a web page or a terminal window is a nice way to get your programming feet wet, but perhaps you’re interesting in making something that looks good. After all, most of the programs you create are going to need to provide a nice interface for your users.

If you want to delve into the realm of graphical components, a good starting place is the JFrame. It's a top level container for the rest of an interface's graphical components. The JFrame is part of the Swing API and provides a way to create a simple window for a Java application.