Week 9 Event driven programing

0 7 Datenblatt up804653

Lernen beginnen

Frage		Antworten
what two things does an interactive GUI component need to process user input Lernen beginnen		event listener to register the user action adn event handler the implement a responce
describe an interface Lernen beginnen		An interface is like a class, but it can contain only abstract methods and constant fields (no class variables).
The class that implements an interface should override all interface methods. true or false? Lernen beginnen		true
To handle an AWT event you must implement an interface (ActionListener, WindowListener, etc.). true or flase? Lernen beginnen		true
is an interface part of class hierachy? Lernen beginnen		No, Unrelated classes can implement the same interface
can an interface implement methods? Lernen beginnen		no
A class can implement many interfaces but can extend only one superclass. true or flase? Lernen beginnen		true