Deck 13: Java-Fx: Graphics, Effects, and Media

Question 1

Which of the following import statements must be used in order to use the Color class?

A) import.javafx.scene.Paint.color;
B) import.javafx.scene.paint.Color;
C) import.javafx.paint.color;
D) import.javafx.scene.Color;

Answer 1

B

Question 2

The setInterpolator method allows you to specify how a transition begins and ends.

Answer 2

True

Question 3

Given a window that is 640 (width) by 480 (height), which of the following represents the lowest position on the left side?

A) (639, 0)
B) (0, 639)
C) (0, 479)
D) (479, 0)

Answer 3

C

Question 4

Which effect class do you use to increase an image's brightness?

A) Glow
B) Reflection
C) ColorAdjust
D) SepiaTone

Question 5

Which class is used to move a node from one position on the screen to another?

A) AnimationTransition
B) MoveTransition
C) RotateTransition
D) TranslateTransition

Question 6

Which class specifies the amount of time an animation should last?

A) Time
B) Clock
C) Duration
D) TimeSpan

Question 7

Since the Node class's setEffect method only accepts one effect object as an argument, it is impossible to combine effects.

Question 8

The __________ arc type causes a straight line to be drawn from one endpoint of the arc to the other endpoint.

A) ArcType.ROUND
B) ArcType.CLOSED
C) ArcType.CHORD
D) ArcType.OPEN

Question 9

A polygon, created by the Polygon class is, by default, filled with the color black.

Question 10

To make a node half its original size, you pass the setScaleX method the value 2 and pass the setScaleY method the value 0.5.

Question 11

The FillTransition class works only with objects of the Shape class or one of its subclasses.

Question 12

To create a circle, you need to specify only the X and Y coordinates of the center point.

Question 13

Which of the following creates a blue circle centered at X = 50, Y = 50 with a radius of 50?

A) Circle blueCircle = new Circle(50, 50, 50);
BlueCircle.setFill(Color.BLUE);
B) Circle blueCircle = new Circle(50, 50);
BlueCircle.setStroke(Color.BLUE);
C) Circle blueCircle = new Circle(50, 50, 50, Color.BLUE);
D) Circle blueCircle = new blueCircle(50);
BlueCircle.setColor(BLUE);

Question 14

Which class creates an animation in which a node rotates?

A) Rotate
B) RotateTransition
C) NodeRotation
D) NodeRotate

Question 15

JavaFX provides transition classes that allow the creation of animations by causing a node to change, over time, from one state to another.

Question 16

In a window that is 640px wide by 480px high, the top right X, Y coordinates would be (0, 480).

Question 17

The following statement will draw the string "Welcome!" starting at the top left corner of the screen.
Text welcomeText = new Text(0, 0, "Welcome!");

Question 18

To animate a node with the ScaleTransition class, you specify starting and ending

A) sizes
B) colors
C) angles
D) scale factors

Question 19

To create an animation in which a node fades in or out over a period of time, use the __________ class.

A) Fade
B) FillTransition
C) FadeTransition
D) Fill

Question 20

The Rotate class creates a rotating animation.

Question 21

Select all that apply. Which of the following classes are used to play videos?

A) MediaView
B) Media
C) MediaPlayer
D) VideoPlayer

Question 22

Which mouse event occurs when the user presses and releases the mouse button?

A) MOUSE_PRESSED
B) MOUSE_RELEASED
C) MOUSE_CLICKED
D) MOUSE_DRAGGED

Question 23

Which transition class causes a node to become larger or smaller?

A) FillTransition
B) SizeTransition
C) ScaleTransition
D) TranslateTransition

Question 24

Which of the following statements draws the string "Love to animate!" starting at coordinates (200, 50)?

A) Text myText = new myText(200, 50, "Love to animate!");
B) Text myText = new Text(50.0, 200.0, "Love to animate!");
C) Text myWords = new Text(200.0, 50.0, "Love to animate!");
D) Text Words = new Words(200, 50, "Love to animate!");

Question 25

What does the following code snippet do? Circle myCircle = new Circle(50, 50, 25);
TranslateTransition rtrans =
New TranslateTransition(new Duration(5000), myCircle);

A) It creates a circle with center point (50, 25), radius = 50, and duration = 5000 seconds.
B) It creates a circle with center point (50, 50), radius = 25, and duration = 5 seconds.
C) It creates a circle with center point (25, 50), radius = 25, and duration = 5 seconds.
D) It creates a circle with center point (50, 25), radius = 50, and duration = 50 seconds.

Question 26

What does the following code snippet do when the animation is played, given that imageView has been created? FadeTransition ftrans = new FadeTransition
(new Duration(5000), imageView);
Ftrans.setFromValue(1.0);
Ftrans.setToValue(0.5);
Ftrans.play():

A) The image will be completely opaque when displayed and will decrease to 50% opacity over the five seconds of the animation.
B) The image will be completely invisible when displayed and will increase to 50% opacity over the five seconds of the animation.
C) The image will be completely opaque when displayed and will decrease to 50% opacity over the five minutes of the animation.
D) The image will be 50% opaque when displayed and will increase to 100% over the five seconds of the animation.

Question 27

Select all that apply. Which of the following are possible states of a MediaPlayer object?

A) READY
B) PLAYING
C) PAUSED
D) STOPPED

Question 28

To combine several effects, use the Effect class's __________ method.

A) setInput
B) combineEffect
C) addEffect
D) None of these; you cannot combine effects.

Question 29

All the transition classes inherit a method named __________ which allows you to specify how the animation begins and ends.

A) setFromTo
B) setInterpolator
C) setInterpreter
D) setStartEnd

Question 30

Any time a user presses a key, a __________ event occurs.

A) KEY_TYPED
B) KEY_PRESSED
C) KEY_RELEASED
D) KEY_EVENT

Question 31

Select all that apply. Which of the following classes are used to play an audio file?

A) MediaView
B) Media
C) MediaPlayer
D) AudioPlayer

Question 32

Select all that apply. Which of the following are key events?

A) when a user rolls a mouse over the monitor
B) when a user presses a key
C) when a user presses and releases a key that produces a Unicode character
D) when a user releases a key

Question 33

Which of the following is a subclass of Node?

A) Media
B) MediaPlayer
C) Both of these
D) Neither of these

Question 34

Select all that apply. Which of the following are constructors of the Rectangle class?

A) Rectangle(width, height, stroke)
B) Rectangle(width, height)
C) Rectangle(X, Y, width, height)
D) Rectangle(width, height, fill)

Question 35

Select all that apply. Which of the following will cause a counterclockwise rotation of a RotateTransition object, rtrans?

A) rtrans.setFromAngle(60.0);
Rtrans.setByAngle(15.0);
B) rtrans.setFromAngle(-60.0);
Rtrans.setByAngle(15.0);
C) rtrans.setFromAngle(60.0);
Rtrans.setByAngle(-15.0);
D) rtrans.setAngle(60.0, 15.0);

Question 36

Select all that apply. Which of the following are subclasses of the Animation class and the Transition class?

A) StrokeTransition
B) TextFillTransition
C) ReverseTransition
D) ScaleTransition

Question 37

Select all that apply. Which of the following are special effects that can be applied to nodes in a scene graph?

A) a shadow appears behind a node
B) a glow appears
C) a shadow appears inside the edges of a node
D) an image has a sepia tone appearance

Question 38

Select all that apply. Which of the following are mouse event types?

A) MOUSE_CLICKED
B) MOUSE_MOVED
C) MOUSE_LIFTED
D) MOUSE_PRESSED

Question 39

Select all that apply. Which of the following are transition classes?

A) FadeTransition
B) StrokeTransition
C) RotateTransition
D) RunTransition

Question 40

Which of the following code snippets creates a Line and uses a RotateTransition object to animate it for seven seconds?

A) Line myLine = new Line(25, 50, 100, 50);
RotateTransition rtrans =
New RotateTransition(new Duration(7000), myLine);
B) Line myLine = new Line(25, 50, 100, 50);
RotateTransition rtrans =
New RotateTransition(new Duration(7), myLine);
C) Line myLine = new Line(25, 50, 100, 50);
RotateTransition rtrans =
New Duration(7000), myLine;
D) Line myLine = new Line(25, 50);
RotateTransition rtrans =
New RotateTransition(new Duration(7000), Line);