Simple graphics with AWT and Swing

Question 1

What is the purpose of the JFrame class in Java Swing?

a) To create a panel for drawing graphics
b) To create a window for displaying GUI components
c) To manage database connections
d) To handle HTTP requests

Answer 1

b) To create a window for displaying GUI components

Question 2

What is the purpose of the JPanel class in Java Swing?

a) To create a window for displaying GUI components
b) To create a panel for drawing graphics and adding components
c) To manage database connections
d) To handle HTTP requests

Answer 2

b) To create a panel for drawing graphics and adding components

Question 3

What is the purpose of the paintComponent method in Java Swing?

a) To create a new window
b) To define the layout of components
c) To draw graphics on a panel
d) To manage database connections

Answer 3

c) To draw graphics on a panel

Question 4

What is the purpose of the Graphics2D class in Java AWT?

a) To create a new window
b) To provide advanced drawing capabilities
c) To manage database connections
d) To handle HTTP requests

Answer 4

b) To provide advanced drawing capabilities

Question 5

What is the purpose of the setColor method in Java AWT?

a) To create a new window
b) To set the background color of a panel
c) To set the color for drawing operations
d) To manage database connections

Answer 5

c) To set the color for drawing operations

Question 6

What is the purpose of the drawLine method in Java AWT?

a) To create a new window
b) To draw a line between two points
c) To manage database connections
d) To handle HTTP requests

Answer 6

b) To draw a line between two points

Question 7

What is the purpose of the drawRect method in Java AWT?

a) To create a new window
b) To draw the outline of a rectangle
c) To manage database connections
d) To handle HTTP requests

Answer 7

b) To draw the outline of a rectangle

Question 8

What is the purpose of the fillRect method in Java AWT?

a) To create a new window
b) To draw a filled rectangle
c) To manage database connections
d) To handle HTTP requests

Answer 8

b) To draw a filled rectangle

Question 9

What is the purpose of the drawOval method in Java AWT?

a) To create a new window
b) To draw the outline of an oval
c) To manage database connections
d) To handle HTTP requests

Answer 9

b) To draw the outline of an oval

Question 10

What is the purpose of the fillOval method in Java AWT?

a) To create a new window
b) To draw a filled oval
c) To manage database connections
d) To handle HTTP requests

Answer 10

b) To draw a filled oval

Question 11

What is the purpose of the drawImage method in Java AWT?

a) To create a new window
b) To draw an image on a panel
c) To manage database connections
d) To handle HTTP requests

Answer 11

b) To draw an image on a panel

Question 12

What is the purpose of the BufferedImage class in Java AWT?

a) To create a new window
b) To store and manipulate image data
c) To manage database connections
d) To handle HTTP requests

Answer 12

b) To store and manipulate image data

Question 13

What is the purpose of the ImageIO class in Java?

a) To create a new window
b) To read and write image files
c) To manage database connections
d) To handle HTTP requests

Answer 13

b) To read and write image files

Question 14

What is the purpose of the setPreferredSize method in Java Swing?

a) To create a new window
b) To set the preferred size of a component
c) To manage database connections
d) To handle HTTP requests

Answer 14

b) To set the preferred size of a component

Question 15

What is the purpose of the setBackground method in Java Swing?

a) To create a new window
b) To set the background color of a component
c) To manage database connections
d) To handle HTTP requests

Answer 15

b) To set the background color of a component

Question 16

What is the purpose of the setFocusable method in Java Swing?

a) To create a new window
b) To allow a component to receive focus
c) To manage database connections
d) To handle HTTP requests

Answer 16

b) To allow a component to receive focus

Question 17

What is the purpose of the pack method in Java Swing?

a) To create a new window
b) To resize the window to fit its contents
c) To manage database connections
d) To handle HTTP requests

Answer 17

b) To resize the window to fit its contents

Question 18

What is the purpose of the setVisible method in Java Swing?

a) To create a new window
b) To make a window visible or invisible
c) To manage database connections
d) To handle HTTP requests

Answer 18

b) To make a window visible or invisible

Question 19

What is the purpose of the Color class in Java AWT?

a) To create a new window
b) To define and manipulate colors
c) To manage database connections
d) To handle HTTP requests

Answer 19

b) To define and manipulate colors

Question 20

What is the purpose of the new Color(int r, int g, int b) constructor in Java AWT?

a) To create a new window
b) To define a custom color using RGB values
c) To manage database connections
d) To handle HTTP requests

Answer 20

b) To define a custom color using RGB values