Problem in creating a custom tag

Question

Hi All,
I'm new to jstl. I want to create a custom tag. I created a sample java class and sample tld file and I used this file at my page it give me an error. The java and tag file code is as follow
package mytag;
import javax.servlet.jsp.*;
import javax.servlet.jsp.tagext.*;
* This is a simple tag example to show how content is added to the
* output stream when a tag is encountered in a JSP page.
public class Hello extends TagSupport {
     private String name=null;
      * Getter/Setter for the attribute name as defined in the tld file
      * for this tag
public void setName(String value){
    name = value;
     public String getName(){
          return(name);
* doStartTag is called by the JSP container when the tag is encountered
    public int doStartTag() {
       try {
        JspWriter out = pageContext.getOut();
        out.println("<table border=\"1\">");
          if (name != null)
           out.println("<tr><td> Hello " + name + " </td></tr>");
        else
           out.println("<tr><td> Hello World </td></tr>");
       } catch (Exception ex) {
         throw new Error("All is not well in the world.");
       // Must return SKIP_BODY because we are not supporting a body for this
       // tag.
       return SKIP_BODY;
* doEndTag is called by the JSP container when the tag is closed
     public int doEndTag(){
        return EVAL_PAGE;
<?xml version="1.0" encoding="ISO-8859-1" ?>
<!DOCTYPE taglib PUBLIC "-//Sun Microsystems, Inc.//DTD JSP Tag Library 1.1//EN"
"http://java.sun.com/j2ee/dtds/web-jsptaglibrary_1_1.dtd">
<taglib>
     <tlibversion>1.0</tlibversion>
     <jspversion>1.1</jspversion>
     <shortname>sample</shortname>
     <info>My sample tag</info>
  <tag>
    <name>hello</name>
    <tagclass>tag.Hello</tagclass>
    <bodycontent>empty</bodycontent>
    <info>
     This is a simple hello tag.
    </info>
  <attribute>
      <name>name</name>
      <required>true</required>
      <rtexprvalue>true</rtexprvalue>
  </attribute>
</tag>
</taglib>And I use this tld file in my jsp code I got below error
* org.apache.jasper.JasperException: /mytag.jsp(9,15) Unable to load tag handler class "tag.Hello" for tag "sample:hello"
Help me about this problem.
Edited by: Get2win4world on Dec 15, 2009 1:12 AM

Answer 1

Your class (according to what is posted) is in the package mytag.
So in your tld: <tagclass>tag.Hello</tagclass>should be<tagclass>mytag.Hello</tagclass>cheers,
evnafets