Once your user and task analysis is complete, set some usability specifications. If you are redesigning a site, check to see if there are any performance or preference measures available. If not, check for measures of a comparable site. Also search the Web. Cite your sources to justify your choices.

What will be an ideal response?

Students tend to pull numbers out of the air for their usability specifications and typically the results are unrealistically high. One possibility is to let it go at this stage, but keep a copy of the usability specifications that they set and discuss the specifications again in the light of their evaluation data.
A fairly good answer to this question is available on the Instructor’s Website (“BeautyExpresso”). The performance measures are a little the optimistic side, IMHO, and there are no target values for results from the questionnaires and surveys. Thanks for Natalya Mandel, Manav Gupta, James Whelton, I-Hsun Huang, Worawit Russameefeung and Hiren Patel.

Computer Science & Information Technology

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Analyze the following code.

``` import javafx.application.Application; import javafx.event.ActionEvent; import javafx.event.EventHandler; import javafx.scene.Scene; import javafx.scene.control.Button; import javafx.scene.layout.HBox; import javafx.stage.Stage; public class Test extends Application { @Override // Override the start method in the Application class public void start(Stage primaryStage) { Button btOK = new Button("OK"); Button btCancel = new Button("Cancel"); EventHandler handler = new EventHandler() { public void handle(ActionEvent e) { System.out.println("The OK button is clicked"); } }; btOK.setOnAction(handler); btCancel.setOnAction(handler); HBox pane = new HBox(5); pane.getChildren().addAll(btOK, btCancel); Scene scene = new Scene(pane, 200, 250); primaryStage.setTitle("Test"); // Set the stage title primaryStage.setScene(scene); // Place the scene in the stage primaryStage.show(); // Display the stage } /** * The main method is only needed for the IDE with limited JavaFX * support. Not needed for running from the command line. */ public static void main(String[] args) { launch(args); } } ``` a. When clicking the OK button, the program displays The OK button is clicked. b. When clicking the Cancel button, the program displays The OK button is clicked. c. When clicking either button, the program displays The OK button is clicked twice. d. The program has a runtime error, because the handler is registered with more than one source.

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Convert the list-of-names application from Exercise 10 in the previous chapter into an applet.

What will be an ideal response?

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In ________, a document will appear on the screen as it will look when it is printed

Fill in the blank(s) with correct word

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The sum of squares of -3 and -8 is 72.

Answer the following statement true (T) or false (F)

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