InputParam component maps a parameter from the request to a managed bean property.

While this can also be accomplised by declaring a managed bean property with the following syntax:

<managed-property>
<property-name>id</property-name>
<property-class>java.lang.String</property-class>
<value>#

</value>
</managed-property>

the advantage of using this component is that it can support a converter and validators.