Start of Tutorial > Start of Trail > Start of Lesson |
Search
Feedback Form |
The bold lines of the following listing implement thepaint
method.import java.applet.Applet; import java.awt.Graphics; public class HelloWorld extends Applet { public void paint(Graphics g) { g.drawString("Hello world!", 50, 25); } }Every applet must implement one or more of the
init
,start
, andpaint
methods. You'll learn about these methods in the Overview of Applets lesson.Besides the
init
,start
, andpaint
methods, applets can implement two more methods that the browser calls when a major event occurs (such as leaving the applet's page):stop
anddestroy
. Applets can implement any number of other methods, as well.Returning to the above code snippet, the
Graphics
object passed into thepaint
method represents the applet's onscreen drawing context. The first argument to theGraphics
drawString
method is the string to draw onscreen. The second and third arguments are the (x,y) position of the lower left corner of the text onscreen. This applet draws the string "Hello world!" starting at location (50,25). The applet's coordinate system starts at (0,0), which is at the upper left corner of the applet's display area. You'll learn all about drawing to the screen in the Creating a GUI with JFC/Swing trail.
Start of Tutorial > Start of Trail > Start of Lesson |
Search
Feedback Form |
Copyright 1995-2005 Sun Microsystems, Inc. All rights reserved.