Week7 Graphical User Interface (GUI). Abstract Windowing Toolkit (AWT) and Swing

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What are the 3 types of GUI API windows in java?
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frames, dialogs, and applets.

what does API mean?
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Application Programming Interface

Which of the following can stand alone? frames, dialogs, and applets.?
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frames

Frame can be implemented using class ____ (from the original AWT – java. awt) and its subclass ____ which is a part of the more flexible ____ graphics API.
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Frame can be implemented using class Frame and its subclass JFrame which is a part of the more flexible Swing graphics API. Frame can be implemented using class Frame and its subclass JFrame which is a part of the more flexible Swing graphics API.

what is a component object?
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A component object can be displayed on window and the user can interact with the program using it.

A component that contains other components is called a ______
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A component that contains other components is called a container

What is a heavy weight component?
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heavyweight component is associated with its own native screen resource (commonly known as a peer).

what is a light weight compnent?
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A lightweight component has no native screen resource of its own, so it is "lighter." A lightweight component relies on the screen resource from an ancestor in the containment hierarchy, possibly the underlying Frame object

What are the 3 basic top level containers?
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JWindow, JFrame, JDialog

what is JPanel
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lightweight container used mostly to organize objects within other containers

What is an applet?
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An applet is a Java program embedded within a Web page and run by a Web browser

what can an applet contain?
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An applet can contain objects from Buttons, TextFields, Labels, and other Component subclasses.

what is the short hand code of: Button myNewButton = new Button(“OK”); add(myNewButton);
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add(new Button(“OK”));

Explain the init() method
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The init() method is executed first when an applet program is run (similarly to the main() method in Java application program).


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