Java Reference
In-Depth Information
Toolkit.getDefaultToolkit().getScreenSize()
⇒
Returns the dimension of the
display in pixels.
Color
⇒
The class for colors.
⇒
Creates an object for the red color.
Color c = Color.RED;
⇒
Creates a new color with red=3, green=4, and
Color c = new Color(2,3,4);
blue=5.
⇒
Returns the background color of the panel.
panel.getBackround()
panel.setBackground(Color.RED);
⇒
Changes the background color of the panel
to red.
⇒
Graphics
The drawing brush class.
⇒
The 2D drawing brush class, which inherits from the
Graphics
class.
Graphics2D
Font f = new Font("SansSerif",Font.Bold+Font.Italic,20);
⇒
Creates a new
font object with font: SansSerif, bold and italic, and 20-point size.
GraphicsEnvironment.getLocalGraphicsEnvironment().getAvailableFontFami-
lyNames()
⇒
Returns an array of the names of all available fonts that are currently
installed in the operating system.
g2.setColor(Color.red);
⇒
Changes the color of the brush to red, where
g2
is an
object of type
Graphics2D
.
g2.setFont(f);
⇒
Changes the font of the brush.
⇒
Draws the string
s
with bottom left position of (10,20).
g2.drawString(s,10,20);
⇒
Draws a rectangle starting
g2.draw(new Rectangle2D.Double(2,2,10,20));
with top left corner of (2,2) of width 10 and height 20.
⇒
Fills a rectangle starting with
g2.fill(new Rectangle2D.Double(2,2,10,20));
top left corner of (2,2) of width 10 and height 20.
g2.draw(new Ellipse2D.Double(2,2,10,20));
Draws an ellipse with surround-
ing rectangle with top left corner of (2,2) of width 10 and height 20.
⇒
⇒
Draws a line between the pixels (2,2)
g2.draw(new Line2D.Double(2,2,10,20));
and (10,20).
g2.draw(new Point2D.Double(2,2));
⇒
Displays the point (2,2).
Image image = ImageIO.red(new File("player.gif"));
⇒
Creates an image ob-
jet from
gif
file.
g2.drawImage(image,10,10);
⇒
Draws the image at position (10,10).
System.exit(0);
⇒
Terminates the program.
