What can you say about the following java class definition?
public class myapp extends jframe implements actionlistener {

The class is called MyApp which inherits from JFrame and implements the ActionListener interface.

Explanation:

The class is called MyApp which extends the swing class JFrame and implements the ActionListener interface for event handling. As a results it needs to implement a method called actionPerformed for handling the relevant events that may be raised from the user interface. Since it extends JFrame, it has access to all the public and protected methods defined in JFrame(for example setTitle to set the title of the frame).

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