> Did you add a taglib declaration for the JSTL core tags?
Yes, I did. It work well I wrote c:out tag on same page. when I
remove c:if tag.
And I checked standard.jar and c.tld. Standard.jar has
org.apache.taglibs.standard.tag.el.core.IfTag.class and c.tld as
follows.
<tag>
<name>if</name>
<tag-class>org.apache.taglibs.standard.tag.el.core.IfTag</tag-class>
<body-content>JSP</body-content>
<description>
Simple conditional tag, which evalutes its body if the
supplied condition is true and optionally exposes a Boolean
scripting variable representing the evaluation of this condition
</description>
<attribute>
<name>test</name>
<required>true</required>
<rtexprvalue>false</rtexprvalue>
</attribute>
<attribute>
<name>var</name>
<required>false</required>
<rtexprvalue>false</rtexprvalue>
</attribute>
<attribute>
<name>scope</name>
<required>false</required>
<rtexprvalue>false</rtexprvalue>
</attribute>
</tag>
Jun Koizumi
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