Yes. Children of the same parent have their parent's characteristics in common, but each child has additional methods and variables.
The Java AWT (Abstract Windowing Toolkit) contains the 
fundamental classes used for
constructing GUIs.
The  abstract Component class is the base class for the AWT.
Many other AWT classes are derived from it.
(We will not look at most of these classes).
Button, Canvas, and Container
are some AWT classes derived from Component.
The JComponent class 
is derived from Container
and is one of the base classes of Swing.
The JFrame class
is derived from the AWT Frame class.
It is usually the main container for a GUI application.
The JApplet class
(derived from the AWT Applet class)
is sometimes used for Web programming, but the 
Applet is much more commonly used for this.