Question 1

An event handler class will not be executed unless it has been registered with the correct control.

Accepted Answer

An event handler class must be registered with the appropriate control (e.g., a button or a text field) to be called or executed when the specified event (e.g., a click or a key press) occurs.

Question 2

To add padding to an HBox you can call the __________ method.
A) HBoxPadding
B) SetHBoxPadding
C) setPadding
D) setHboxPad

Accepted Answer

The correct method to add padding to an HBox in JavaFX is `setPadding`. This method is inherited from the `Region` class, which is a superclass of all layout containers in JavaFX, including HBox.

Question 3

A(n) __________ is an action that takes place in an application, such as the clicking of a button.
A) instance
B) effect
C) case
D) event

Accepted Answer

An event in an application refers to an action that occurs, such as the clicking of a button, which can trigger specific responses or functions within the application.

Question 4

Programs that operate in a GUI environment must be __________.
A) event driven
B) in color
C) dialog boxes
D) layout managers

Accepted Answer

Programs that operate in a GUI (Graphical User Interface) environment are event-driven, meaning they respond to user actions such as clicks, typing, or mouse movements. These events dictate the flow of the program. Choices B, C, and D are features or components that can be used within a GUI application but are not necessary for all GUI programs.

Question 5

Layout containers provide methods for fine-tuning the way controls are arranged.

Accepted Answer

Layout containers in GUI frameworks allow developers to manage the positioning and sizing of controls within a user interface, offering methods to adjust margins, alignment, spacing, and more for precise layout management.

Question 6

To display an image in a JavaFX application, you use either the Image or ImageView class.

Accepted Answer

The answer of To display an image in a JavaFX...

Question 7

One important difference between the command line interface and a GUI interface is that __________.
A) in command line the background color of the monitor will always be black but in a GUI it can be any color
B) in a GUI environment the user determines the order in which things happen while the user has no control over the order or events in a command line interface
C) users must type information in a command line interface but, when using a GUI, typing is never required
D) All of these are important differences.

Accepted Answer

The answer of One important difference between the command line...

Question 8

When programming in JavaFX, you should think of the GUI objects as nodes in a tree-like hierarchical structure known as a scene graph.

Accepted Answer

In JavaFX, GUI components are indeed organized as nodes in a hierarchical structure called a scene graph, where each node can have child nodes, creating a tree-like structure. This approach facilitates managing and rendering the GUI.

Question 9

A GUI program automatically stops executing when the end of the main method is reached.

Accepted Answer

In a GUI program, the program doesn't automatically stop executing when the end of the main method is reached because it starts a separate event dispatch thread for handling user interface events, which keeps running until the program is explicitly closed or terminated.

Question 10

When a splash screen is displayed, the application does not load and execute until the user clicks the splash screen image with the mouse.

Accepted Answer

A splash screen is typically used as a graphical introduction to a software application, displaying while the application's initial loading processes occur in the background. It does not require user interaction to proceed with the application's loading and execution.

Question 11

For this question, assume myView references an ImageView object. In order to preserve the image's aspect ratio (so it does not appear stretched or distorted), you should use which of the following?
A) myView.setPreserveRatio(false);
B) myView.setPreserveRatio(true);
C) myView.setPreserveRatio();
D) Either (a) or (c) would work.

Accepted Answer

Setting myView.setPreserveRatio(true) ensures that the aspect ratio of the ImageView's image is preserved, preventing it from appearing stretched or distorted.

Question 12

The BorderPane container always displays its content in five regions which are top, bottom, left, right, and center and each region must be used.

Accepted Answer

While a BorderPane container does have five distinct regions (top, bottom, left, right, and center) for displaying content, it is not mandatory to use all five regions. Any of them can be left unused.

Question 13

Which of the following is not a way a user can interact with a computer?
A) command line
B) console interface
C) GUI
D) All of these are ways for a user to interact with a computer.

Accepted Answer

All of the options listed (command line, console interface, GUI) are indeed ways a user can interact with a computer.

Question 14

The HBox object's setPadding method takes a(n) __________as its argument.
A) Insets method
B) Insets object
C) boolean
D) integer

Accepted Answer

The setPadding method of an HBox object in JavaFX takes an Insets object as its argument to define the padding around the HBox.

Question 15

The __________ layout container arranges its contents with columns and rows.
A) GridLayout
B) GridPane
C) Grid
D) CellManager

Accepted Answer

GridLayout arranges its contents with columns and rows.

Question 16

To display an image in a JavaFX application you must __________.
A) include either the Image or the ImageView class
B) include both the setImage and the ViewImage classes
C) include both the Image and the ImageView classes
D) include either the setImage or the ViewImage class

Accepted Answer

To display an image in a JavaFX application, you must include both the Image and the ImageView classes. The Image class represents the image itself, while the ImageView class is a node used for painting an image on the screen.

Question 17

To preserve an image's aspect ratio you can use the ImageView class's PreserveAspectRatio method.

Accepted Answer

To preserve an image's aspect ratio in Android, you typically use the `android:scaleType` attribute in XML with values like `fitCenter`, `centerCrop`, etc., or equivalent methods in code, not a `PreserveAspectRatio` method.

Question 18

The command line interface is an event-driven interface.

Accepted Answer

The command line interface (CLI) is a text-based interface where users type commands to interact with the operating system or software, rather than being event-driven, which typically refers to interfaces that respond to user actions or events (like mouse clicks or key presses) in a graphical user interface (GUI).

Question 19

The Pos type must be imported from the javafx.geometry package.

Accepted Answer

The `Pos` class, which is used for alignment and positioning in JavaFX, is indeed part of the `javafx.geometry` package.

Question 20

An event object is created when an event takes place.

Accepted Answer

An event object is automatically created and passed to the event handler when an event occurs, providing properties and methods related to the event.

Quiz 12: Java-Fx: Gui Programming and Basic Controls

An event handler class will not be executed unless it has been registered with the correct control.

To add padding to an HBox you can call the __________ method.

A(n) __________ is an action that takes place in an application, such as the clicking of a button.

Programs that operate in a GUI environment must be __________.

Layout containers provide methods for fine-tuning the way controls are arranged.

To display an image in a JavaFX application, you use either the Image or ImageView class.

One important difference between the command line interface and a GUI interface is that __________.

When programming in JavaFX, you should think of the GUI objects as nodes in a tree-like hierarchical structure known as a scene graph.

A GUI program automatically stops executing when the end of the main method is reached.

When a splash screen is displayed, the application does not load and execute until the user clicks the splash screen image with the mouse.

For this question, assume myView references an ImageView object. In order to preserve the image's aspect ratio (so it does not appear stretched or distorted) , you should use which of the following?

The BorderPane container always displays its content in five regions which are top, bottom, left, right, and center and each region must be used.

Which of the following is not a way a user can interact with a computer?

The HBox object's setPadding method takes a(n) __________as its argument.

The __________ layout container arranges its contents with columns and rows.

To display an image in a JavaFX application you must __________.

To preserve an image's aspect ratio you can use the ImageView class's PreserveAspectRatio method.

The command line interface is an event-driven interface.

The Pos type must be imported from the javafx.geometry package.

An event object is created when an event takes place.