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14.3 Assigning Attributes to Tags

319

Figure 14 2 Result of SimplePrimeExample.jsp.

14.3 Assigning Attributes to Tags

Allowing tags like

adds significant flexibility to your tag library. This section explains how to add

attribute support to your tags. 

The Tag Handler Class

Providing support for attributes is straightforward. Use of an attribute called

attribute1

 simply results in a call to a method called 

setAttribute1

 in

your class that extends 

TagSupport

 (or otherwise implements the 

Tag

 inter 

face). The attribute value is supplied to the method as a 

String

. Conse 

quently, adding support for an attribute named 

attribute1

 is merely a

matter of implementing the following method:

public void setAttribute1(String value1) {

doSomethingWith(value1);

}

Note that an attribute of 

attributeName

 (lowercase 

a

) corresponds to a

method called 

setAttributeName

 (uppercase 

A

).

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