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

What are the 3 types of GUI API windows in java?

frames, dialogs, and applets.

what does API mean?

Application Programming Interface

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

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.

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?

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 ______

A component that contains other components is called a container

What is a heavy weight component?

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

what is a light weight compnent?

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?

JWindow, JFrame, JDialog

what is JPanel

lightweight container used mostly to organize objects within other containers

What is an applet?

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

what can an applet contain?

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);

add(new Button(“OK”));

Explain the init() method

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