org.javalite.activeweb

Class Captcha

java.lang.Object

org.javalite.activeweb.Captcha

public class Captcha
extends Object

This is a simple captcha class, use it to generate a random string and then to create an image of it.

Author:

Igor Polevoy

Method Summary

Modifier and Type	Method and Description
static byte[]	generateImage(String text) Generates a PNG image of text 180 pixels wide, 40 pixels high with white background.
static String	generateText() Generates a random alpha-numeric string of eight characters.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

generateText

public static String generateText()

Generates a random alpha-numeric string of eight characters.

Returns:

random alpha-numeric string of eight characters.

generateImage

public static byte[] generateImage(String text)

Generates a PNG image of text 180 pixels wide, 40 pixels high with white background.

Parameters:

text - expects string size eight (8) characters.

Returns:

byte array that is a PNG image generated with text displayed.