For each tag attribute, you must define a set method in the tag handler that conforms to the JavaBeans architecture conventions. For example, consider the tag handler for the JSTL c:if tag:
<c:if test="${Clear}">
This tag handler contains the following method:
public void setTest(boolean test) { this.test = test; }
As shown by the preceding example, the name of the attribute must match the name of the set method.