Are you sure? If you look at the Tag tutorial
on JavaSoft and my app server (Resin) also complains
This what the tutorial has to say.
http://java.sun.com/products/jsp/tutorial/TagLibraries6.html#62006 <html>
Tags With Attributes
The start tag of a custom action can contain attributes in the form attr="value". Attributes serve to customize the behavior of a tag just as parameters are used to affect the outcome of executing a method on an object.
Tag attributes can be set from one or more parameters in the request object or from a
String constant. The only types of attributes that can be set from request parameter values and String constants are those listed in Table 1; the conversion applied is that shown in the table. When assigning values to indexed attributes the value must be an array; the rules just described apply to the elements.
Table 1 Valid Tag Attribute Assignments
Property Type
Conversion on String Value
boolean or Boolean
As indicated in java.lang.Boolean.valueOf(String)
byte or Byte
As indicated in java.lang.Byte.valueOf(String)
char or Character
As indicated in java.lang.Character.valueOf(String)
double or Double
As indicated in java.lang.Double.valueOf(String)
int or Integer
As indicated in java.lang.Integer.valueOf(String)
float or Float
As indicated in java.lang.Float.valueOf(String)
long or Long
As indicated in java.lang.Long.valueOf(String)
An attribute value of the form <%= scriptlet_expression %> is computed at request time. The value of the expression depends on the type of the attribute's value, which is specified in the object that implements the tag (called a tag handler). Request-time expressions can be assigned to attributes of any type; no automatic conversions will be performed.
The following tag has an attribute named date, which accepts a String value obtained by evaluating the variable today:
<tlt:greeting date="<%= today %>" />
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Notice that
