This JFrame is a class which is located at the java package javax.swing

JFrame helps to form applet , this class is one type of Container where different Components can be

added by getContentPane() and add() method of this class.

JFrame

The JFrame is one of the static or predefined Frame where there is limitation of extending the Frame feature

All the classes of

javax.swing.*;

package are predefined applet components. It’s design is also static on all

operating system. There is platform independent design of JButton,JLabel,JTextField bar and all things. Here we use JFrame for the

independent of the application.

Where as in the context of

 java.awt.*;

The components like Button,Label all are platform indendent as well.