Definitions for "JFrame"
A resizable, movable window with title bar and close button. Usually it contains JPanel s. The entire application is usually a JFrame. Frame BorderLayout
a more complex beast than the awt Frame which is why it provides us with more built-in functionality, but it also adds some complexity such as requiring us to add components to its 'content pane' rather than directly to the frame itself
Keywords:  javax, predefined, class
a predefined class from the javax
JFrame is Model View Controller Model2 framework for Web based applications written in Java language. It is very simple and emphasis on security and stability. Because of it simplicity this framework can be used and for studying purposes.
a top-level container in a hierarchy of visible components