4. Swing Components

• JButton is an implementation of a push button.
  Buttons can be decorated with text or a graphic icon.

• JFrame is a top-level window with a captioned title and a border.
  A frame is used to represent the application.

• JLabel is a display area for a short length text string.
  Labels are often used alongside input text areas to document their purpose.

• JMenuBar represents a menu-bar as might appear at the top of a frame.

• JPanel is a general-purpose container frequently used to group other components.

• JTextArea is a multi-line text area for presenting plain text.

• JTextField is a component that permits the editing of a single line of text.