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Language: Java
Expertise: Advanced

Sep 11, 2007

The introspection process allows the JSP engine to populate a JavaBean with the values provided by a client through an HTML form.

//when the names of the bean properties match the names of the HTML 
//form
<jsp:useBean id="bean_name_here" class="bean_class_here" scope="page|request|session|application">
    <jsp:setProperty name="bean_name_here" property="*"/>
</jsp:useBean>

//when the names of the bean properties don't match the names of the 
//HTML form

     <jsp:setProperty name="bean_name_here" 
                      param="HTML_form_property_name_here" 
                      property="bean_property_name_here"/>
</jsp:useBean>

This technique is very useful if you want to manage an HTML form through a JSP page.