How to Draw a circle in Java ME

This article explains how to draw a circle by using Java ME low-level graphics.

Description

When working with low-level Graphics, it's possible to draw simple shapes just using the available Graphics methods:

• drawArc(int x, int y, int width, int height, int startAngle, int arcAngle)
• drawLine(int x1, int y1, int x2, int y2)
• drawRect(int x, int y, int width, int height)
• drawRoundRect(int x, int y, int width, int height, int arcWidth, int arcHeight)

Source code

The following code shows the paint method of a Canvas class which helps to draw a circle in Java ME

protected void paint(Graphics graphics)
  {
    graphics.setColor(255,255,255);
    graphics.fillRect(0, 0, getWidth(), getHeight());
    graphics.setColor(255,0,0);
    graphics.drawArc(0, 0, getWidth(), getHeight(), 0, 360); 
 }

To draw a filled circle, just replace the drawArc() method with fillArc().

Download

You can download the source code presented in this article here: Media:DrawACircleMIDlet.zip

Related resources

Low-level APIs on Forum Nokia Java ME Developer's Library