Self Quiz Unit 6 (CS1102) PDF

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● Self-Quiz Unit 6Question 1

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Question text Which one of the following is an event handler?

Select one:

a.

an event generator

b.

an event listener

c.

an event loop

d.

an event method

e.

javafx.scene.input.MouseEvent; Feedback Your answer is correct. See Section 6.3.1. The correct answer is: an event listener Question 2

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Question text Consider the following Java program. What is the superclass of "TestFX"? import javafx.application.Application; import javafx.scene.Scene;

import javafx.stage.Stage; import javafx.application.Platform; import javafx.scene.layout.BorderPane; import javafx.scene.layout.HBox; import javafx.scene.control.Button; public class TestFX extends Application { public void start(Stage stage) { Button quitButton = new Button("Quit"); quitButton.setOnAction(e -> Platform.exit()); HBox buttonBar = new HBox(quitButton); BorderPane root = new BorderPane(); root.setBottom(buttonBar); Scene scene = new Scene(root, 100, 50); stage.setScene(scene); stage.show(); }

public static void main(String[] args) { launch(args); } }

Select one:

a.

ActionEvent

b.

ActionListener

c.

launch

d.

start

e.

Application Feedback Your answer is incorrect. See Section 5.5.2. The correct answer is: Application Question 3

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Question text Consider the following Java program. Which one of the following is a package?

import javafx.application.Application; import javafx.scene.Scene; import javafx.stage.Stage; import javafx.application.Platform;

import javafx.scene.layout.BorderPane; import javafx.scene.layout.HBox; import javafx.scene.control.Button; public class TestFX extends Application { public void start(Stage stage) { Button quitButton = new Button("Quit"); quitButton.setOnAction(e -> Platform.exit()); HBox buttonBar = new HBox(quitButton); BorderPane root = new BorderPane(); root.setBottom(buttonBar); Scene scene = new Scene(root, 100, 50); stage.setScene(scene); stage.show(); } public static void main(String[] args) { launch(args);

} }

Select one:

a.

javafx.scene.Scene

b.

start

c.

Stage

d.

Button

e.

BorderPane Feedback

Your answer is correct. See Section 4.6.2. The correct answer is: javafx.scene.Scene Question 4

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Question text Consider the following Java program. Which statement displays a window with a button on the screen? import javafx.application.Application; import javafx.scene.Scene; import javafx.stage.Stage; import javafx.application.Platform; import javafx.scene.layout.BorderPane; import javafx.scene.layout.HBox; import javafx.scene.control.Button;

public class TestFX extends Application { public void start(Stage stage) { Button quitButton = new Button("Quit"); quitButton.setOnAction(e -> Platform.exit()); HBox buttonBar = new HBox(quitButton); BorderPane root = new BorderPane(); root.setBottom(buttonBar); Scene scene = new Scene(root, 100, 50); stage.setScene(scene); stage.show(); } public static void main(String[] args) { launch(args); } }

Select one:

a.

HBox buttonBar = new HBox(quitButton);

b.

BorderPane root = new BorderPane();

c.

Scene scene = new Scene(root, 100, 50);

d.

stage.setScene(scene);

e.

stage.show(); Feedback Your answer is incorrect. See Section 6.1.1. The correct answer is: stage.show(); Question 5

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Question text Consider the following Java program. Which statement registers an object to receive events? import javafx.application.Application; import javafx.scene.Scene; import javafx.stage.Stage; import javafx.application.Platform; import javafx.scene.layout.BorderPane; import javafx.scene.layout.HBox; import javafx.scene.control.Button; public class TestFX extends Application { public void start(Stage stage) { Button quitButton = new Button("Quit"); quitButton.setOnAction(e -> Platform.exit());

HBox buttonBar = new HBox(quitButton); BorderPane root = new BorderPane(); root.setBottom(buttonBar); Scene scene = new Scene(root, 100, 50); stage.setScene(scene); stage.show(); } public static void main(String[] args) { launch(args); } }

Select one:

a.

import javafx.scene.control.Button;

b.

Button quitButton = new Button("Quit");

c.

quitButton.setOnAction(e -> Platform.exit());

d.

root.setBottom(buttonBar);

e.

stage.setScene(scene); Feedback Your answer is incorrect. See Section 6.3.1. The correct answer is: quitButton.setOnAction(e -> Platform.exit()); Finish review...