Progressively enhancing a web page for different viewing contexts (such as smartphones and tablets) through the use of coding techniques is called _________________________

When an application uses many components, rather than deriving just one class from the JFrame class, it is often better to encapsulate smaller groups of related components and their event listeners into their own class. A commonly used technique to do this is:

A) To extend a class from the JAbstractButton class to contain other components and their related code B) To extend a class from the JComponent class to contain other components and their related code C) To extend a class from the JPanel class to contain other components and their related code D) To extend a class from the JFrame class to contain other components and their related code

Which of the following statements creates a class that is extended from the JFrame class?

A) JFrame DerivedClass = new JFrame(); B) class JFrame DerivedClass; C) JFrame(DerivedClass); D) public class DerivedClass extends JFrame{}