Question 1

The JColorChooser dialog allows colors to be chosen by all but which of the following?

Accepted Answer

A)  Swatches. 
B)  Hue, saturation, brightness. 
C)  Gradient, cycle, brightness. 
D)  Red, Green, Blue. 
A)  Swatches. 
B)  Hue, saturation, brightness. 
C)  Gradient, cycle, brightness. 
D)  Red, Green, Blue. C

Question 2

The Java statement:
g.draw3DRect(290, 100, 90, 55, true);

Accepted Answer

A)  draws a rectangle that appears to be raised (the top and left edges of the rectangle are slightly darker than the rectangle). 
B)  draws a rectangle that appears to be lowered (the bottom and right edges of the rectangle are slightly darker than the rectangle). 
C)  draws a rectangle that appears to be raised (the bottom and right edges of the rectangle are slightly darker than the rectangle). 
D)  draws a rectangle that appears to be lowered (the top and left edges of the rectangle are slightly darker than the rectangle). 
A)  draws a rectangle that appears to be raised (the top and left edges of the rectangle are slightly darker than the rectangle). 
B)  draws a rectangle that appears to be lowered (the bottom and right edges of the rectangle are slightly darker than the rectangle). 
C)  draws a rectangle that appears to be raised (the bottom and right edges of the rectangle are slightly darker than the rectangle). 
D)  draws a rectangle that appears to be lowered (the top and left edges of the rectangle are slightly darker than the rectangle). C

Question 3

Consider the Java code segment below:
Polygon poly2 = new Polygon();
Poly2.addPoint(100, 30);
Poly2.addPoint(100, 130);
Which of the following will create a polygon that is a square?

Accepted Answer

A)  poly2.addPoint(100, 60); poly2.addPoint(100, 130); 
B)  poly2.addPoint(200, 130); poly2.addPoint(200, 30); 
C)  poly2.addPoint(200, 60); poly2.addPoint(200, 130); 
D)  poly2.addPoint(100, 130); poly2.addPoint(100, 230); 
A)  poly2.addPoint(100, 60); poly2.addPoint(100, 130); 
B)  poly2.addPoint(200, 130); poly2.addPoint(200, 30); 
C)  poly2.addPoint(200, 60); poly2.addPoint(200, 130); 
D)  poly2.addPoint(100, 130); poly2.addPoint(100, 230); B

Question 4

Which of the following statements about the Graphics object is true?
A. The Graphics object is an argument to class Component's repaint method.
B. The Graphics object is instantiated by the user.
C. The Graphics object is the argument to a lightweight GUI component's paintComponent method.
D. The Graphics class is abstract.
E. The Graphics object manages a graphics context.

Accepted Answer

A)  A, C, E. 
B)  C, D, E. 
C)  A, B, D, E. 
D)  All are true. 
A)  A, C, E. 
B)  C, D, E. 
C)  A, B, D, E. 
D)  All are true.

Question 5

Which of the following statements about arcs is false?

Accepted Answer

A)  An arc is drawn as a part of an oval. 
B)  Arcs sweep from a starting angle the number of degrees specified by their arc angle. 
C)  Arcs that sweep clockwise are measured in positive degrees. 
D)  None of the above statements are false. 
A)  An arc is drawn as a part of an oval. 
B)  Arcs sweep from a starting angle the number of degrees specified by their arc angle. 
C)  Arcs that sweep clockwise are measured in positive degrees. 
D)  None of the above statements are false.

Question 6

The Java statement:
G.fillOval(290, 100, 90, 55);

Accepted Answer

A)  Draws a filled oval with its center at coordinates x=290, y=100, with height=90 and width=55. 
B)  Draws a filled oval with its leftmost point at coordinates x=290, y=100, with height=90 and width=55. 
C)  Draws a filled oval bounded by a rectangle with its upper-left corner at coordinates x=290, y=100, with width=90 and height=55. 
D)  Draws a filled oval bounded by a rectangle with its upper-left corner at coordinates x=290, y=100, with height=90 and width=55. 
A)  Draws a filled oval with its center at coordinates x=290, y=100, with height=90 and width=55. 
B)  Draws a filled oval with its leftmost point at coordinates x=290, y=100, with height=90 and width=55. 
C)  Draws a filled oval bounded by a rectangle with its upper-left corner at coordinates x=290, y=100, with width=90 and height=55. 
D)  Draws a filled oval bounded by a rectangle with its upper-left corner at coordinates x=290, y=100, with height=90 and width=55.

Question 7

A general path is ________.

Accepted Answer

A)  a set of polylines that do not result in a closed shape 
B)  a shape constructed from straight lines and complex curves 
C)  the shape of the curve in a font's characters 
D)  represented by an object of class GraphicsPath 
A)  a set of polylines that do not result in a closed shape 
B)  a shape constructed from straight lines and complex curves 
C)  the shape of the curve in a font's characters 
D)  represented by an object of class GraphicsPath

Question 8

The Graphics2D method(s) that determine(s) the color and texture for the shape to display is/are:

Accepted Answer

A)  setStroke 
B)  setPaint 
C)  setTexture and setColor 
D)  setTexturePaint 
A)  setStroke 
B)  setPaint 
C)  setTexture and setColor 
D)  setTexturePaint

Question 9

Which of the following is correct for font metrics?

Accepted Answer

A)  height = descent + ascent + leading. 
B)  The amount the character dips below the baseline is the ascent. 
C)  The amount the character can be above the baseline is the leading. 
D)  The amount the character rises above the baseline is the descent. 
A)  height = descent + ascent + leading. 
B)  The amount the character dips below the baseline is the ascent. 
C)  The amount the character can be above the baseline is the leading. 
D)  The amount the character rises above the baseline is the descent.

Question 10

Method getFont of class Graphics returns ________.

Accepted Answer

A)  the current font name as a string 
B)  the font size in points 
C)  a Graphics object representing the current font 
D)  a Font object representing the current font 
A)  the current font name as a string 
B)  the font size in points 
C)  a Graphics object representing the current font 
D)  a Font object representing the current font

Question 11

Consider the code segment below:
Int xValues[] = {100, 150, 200, 100};
Int yValues[] = {30, 130, 30, 30};
G.drawPolyline(xValues, yValues, 4); 
What kind of figure does it draw?

Accepted Answer

A)  A rectangle. 
B)  A triangle. 
C)  A V with its corner at the top. 
D)  A square. 
A)  A rectangle. 
B)  A triangle. 
C)  A V with its corner at the top. 
D)  A square.

Question 12

Class FontMetrics declares methods that can be used to obtain the following font metrics ________.

Accepted Answer

A)  ascent, descent and height 
B)  ascent, descent and leading 
C)  height and leading 
D)  All of the above. 
A)  ascent, descent and height 
B)  ascent, descent and leading 
C)  height and leading 
D)  All of the above.

Question 13

Which of the following properly create and initialize a Font object?
A.Font f = new Font();
B.Font f = new Font("Serif", Font.Bold + Font.Italic, 19);
C.Font f = new Font(Font.Bold, 20, "SansSerif");
D. Font f = new Font(20, Font.Bold, "Monospaced");

Accepted Answer

A)  A and B. 
B)  B and C. 
C)  B. 
D)  D. 
A)  A and B. 
B)  B and C. 
C)  B. 
D)  D.

Question 14

In the Java coordinate system, the point (0, 0) is ________.

Accepted Answer

A)  The lower-right corner of the screen. 
B)  The upper-right corner of the screen. 
C)  The lower-left corner of the screen. 
D)  The upper-left corner of the screen. 
A)  The lower-right corner of the screen. 
B)  The upper-right corner of the screen. 
C)  The lower-left corner of the screen. 
D)  The upper-left corner of the screen.

Question 15

Which of the following are valid Java statements?
A. Color c = new Color(0, 255, 0);
B.Color c = new Color(0.0f, 1.0f, 0.0f);
C.Color c = new Color(0.0d, 1.0d, 0.0d);
D.setGreen;

Accepted Answer

A)  All of the above. 
B)  A, B, C. 
C)  A, B, D. 
D)  A, B. 
A)  All of the above. 
B)  A, B, C. 
C)  A, B, D. 
D)  A, B.

Question 16

GeneralPath method lineTo ________.

Accepted Answer

A)  draws a line from the previous point in the GeneralPath object to the current point 
B)  draws a line with an arrow head to point to a GeneralPath object 
C)  moves the drawing origin around a line 
D)  specifies the first point in a GeneralPath object 
A)  draws a line from the previous point in the GeneralPath object to the current point 
B)  draws a line with an arrow head to point to a GeneralPath object 
C)  moves the drawing origin around a line 
D)  specifies the first point in a GeneralPath object

Question 17

The fact that class Graphics is abstract contributes to Java's portability because ________.

Accepted Answer

A)  drawing is performed differently on every platform that supports Java. A subclass of Graphics must be created that uses the drawing capabilities of the current platform. 
B)  objects of non-abstract classes can only be instantiated on the Windows platform. 
C)  drawing should not be performed on non-Linux platforms. 
D)  Class Graphics is not abstract. 
A)  drawing is performed differently on every platform that supports Java. A subclass of Graphics must be created that uses the drawing capabilities of the current platform. 
B)  objects of non-abstract classes can only be instantiated on the Windows platform. 
C)  drawing should not be performed on non-Linux platforms. 
D)  Class Graphics is not abstract.

Question 18

Which of the following statements about the Java 2D API is true?

Accepted Answer

A)  A Graphics2D object is instantiated to draw Java 2D figures. 
B)  Class Graphics2D is a subclass of class Graphics. 
C)  To access Graphics2D capabilities, cast the Graphics reference passed to paintComponent to a Graphics2D reference. 
D)  All of the above are true. 
A)  A Graphics2D object is instantiated to draw Java 2D figures. 
B)  Class Graphics2D is a subclass of class Graphics. 
C)  To access Graphics2D capabilities, cast the Graphics reference passed to paintComponent to a Graphics2D reference. 
D)  All of the above are true.

Question 19

Which of the following statements is false?

Accepted Answer

A)  A BufferedImage object uses the image stored in its associated TexturePaint object as the fill texture for a filled-in shape. 
B)  Class BufferedImage can be used to produce images in color and gray scale. 
C)  Class GradientPath draws a shape in a gradually changing color. 
D)  All of the above are true. 
A)  A BufferedImage object uses the image stored in its associated TexturePaint object as the fill texture for a filled-in shape. 
B)  Class BufferedImage can be used to produce images in color and gray scale. 
C)  Class GradientPath draws a shape in a gradually changing color. 
D)  All of the above are true.

Exam 13: Graphics and Java 2D

The JColorChooser dialog allows colors to be chosen by all but which of the following?

The Java statement: g.draw3DRect(290, 100, 90, 55, true);

Consider the Java code segment below: Polygon poly2 = new Polygon(); Poly2.addPoint(100, 30); Poly2.addPoint(100, 130); Which of the following will create a polygon that is a square?

Which of the following statements about arcs is false?

The Java statement: G.fillOval(290, 100, 90, 55);

A general path is ________.

The Graphics2D method(s) that determine(s) the color and texture for the shape to display is/are:

Which of the following is correct for font metrics?

Method getFont of class Graphics returns ________.

Consider the code segment below: Int xValues[] = {100, 150, 200, 100}; Int yValues[] = {30, 130, 30, 30}; G.drawPolyline(xValues, yValues, 4); What kind of figure does it draw?

Class FontMetrics declares methods that can be used to obtain the following font metrics ________.

Which of the following properly create and initialize a Font object? A.Font f = new Font(); B.Font f = new Font("Serif", Font.Bold + Font.Italic, 19); C.Font f = new Font(Font.Bold, 20, "SansSerif"); D. Font f = new Font(20, Font.Bold, "Monospaced");

In the Java coordinate system, the point (0, 0) is ________.

Which of the following are valid Java statements? A. Color c = new Color(0, 255, 0); B.Color c = new Color(0.0f, 1.0f, 0.0f); C.Color c = new Color(0.0d, 1.0d, 0.0d); D.setGreen;

GeneralPath method lineTo ________.

The fact that class Graphics is abstract contributes to Java's portability because ________.

Which of the following statements about the Java 2D API is true?

Which of the following statements is false?

Introduction to Computers and Java

Introduction to Java Applications

Control Statements

Control Statements

Methods

Arrays and Arraylists

Introduction to Classes and Objects

Classes and Objects: a Deeper Look

Object Oriented Programming: Inheritance

Object-Oriented Programming: Polymorphism

Exception Handling

Gui Components

Fundamentals of Characters and Strings

Files, Streams and Object Serialization

Generic Collections

Lambdas

Recursion

Searching, Sorting and Big O

Generic Classes and Methods

Custom Generic Data Structures

GUI

Concurrency

Accessing Databases With JDBC

JavaFX

Filters