This week's book giveaway is in the OCPJP forum. We're giving away four copies of OCA/OCP Java SE 7 Programmer I & II Study Guide and have Kathy Sierra & Bert Bates on-line! See this thread for details.
myClass is child class of JPanel and inherits all methods of its super class. To use super class methods in any of this child class method you don't have to instantiate JPanel object. you can override the behavior of super class methods as well in myClass.