<p>Use to generate a custom validation constraint class. You can select the Generate Validator Class option in the wizard if you want the IDE to also generate a constraint validator class for the validation constraint. 
<object classid="java:org.netbeans.modules.javahelp.BrowserDisplayer">
<param name="content" value="http://www.oracle.com/pls/topic/lookup?ctx=nb8200&id=NBDAG3036">
<param name="text" value="<html><u>How?</u></html>">
<param name="textFontSize" value="medium">
<param name="textColor" value="