Captcha implementation. In memory graphics, doesn't use FWT / SWT at all.
CaptchaWriter Interface for captcha image writer impl.
CaptchaCode The Code "password" for a generated captcha
CaptchaGenerator Generate Capctha code/image to file or directly to the browser
A (somewhat lame) captcha writer implementation It is quite configurable and draws a variable number of chars with variable scales It also draws some lines under and over the chars to make it a bit harder to read