Lesson 5.1: Graphical User Interface Design

Question 1

What does Java provide to display and interact with graphics?

Answer 1

Java provides packages to display and interact with graphics and multimedia objects.

Question 2

What was the first grapics model that java used?

Answer 2

The first graphics model in Java was the Abstract Window Toolkit (AWT).

Question 3

What does AWT stand for?

Answer 3

Abstract Windows Toolkit

Question 4

What is the name of the top level container that housed all awt components?

Answer 4

The AWT model places all components in a top-level container called a frame.

Question 5

How does AWT cause methods to be invoked?

Answer 5

AWT can detect events associated with specific components that cause methods to be invoked.

Question 6

What is the primary purpose of AWT?

Answer 6

A primary purpose of AWT and later graphics models was to build graphic user interfaces.

Question 7

Why did AWT use native graphics routines directly?

Answer 7

Native graphics routines offer much better performance than generic Java routines would.

Question 8

How does AWT invoke the paint() method?

Answer 8

The paint() method is called automatically when the main class is instantiated.

Question 9

How can an AWT object know if its window is closed?

Answer 9

A listener method can be attached to an AWT object that takes an action when the window is closed.

Question 10

The _______ class defines the overall container in which components are displayed using AWT.

Answer 10

Frame

Question 11

A/An _______ object represents the content that will be displayed when paint() is called.

Answer 11

graphics

Question 12

A/An _______ is a method that’s intended to detect the occurrence of a particular event.

Answer 12

listener

Question 13

The _______ class defines the methods described in the previous question.

Answer 13

java.awt.event