Error Using Custom Tag

I am trying to use a custom tag but receive an error when I use it on a jsp page.
I have a tag handler class file, tag library descriptor file, specified the path to the .tld in the web.xml file.
The error implies that it cannot find the SimpleTag.class file, though I put it in the \webapps\examples\WEB-INF\classes\ directory.
Here is the error. Does anyone know what else it could be?
org.apache.jasper.JasperException: Unable to compile class for JSP
Generated servlet error:
C:\jakarta-tomcat-4.0.1\work\localhost\examples\jsp\jspVisual\ch10\using_0005ftag$jsp.java:63: Class org.apache.SimpleTag not found.
SimpleTag_jspx_th_myFirstTag_SimpleTag_0 = new SimpleTag();

I could not see any obvious mistakes. But what you could try, in order to isolate the problem, is to bypass the web.xml. In other words access the TLD directly by doing this in your JSP
<%@ taglib uri="/WEB-INF/jsp/tag_library_descriptor.tld" prefix="myFirstTag" %>
if that does work then move the your TLD out of the jsp folder and into WEB-INF , then try
<%@ taglib uri="/WEB-INF/tag_library_descriptor.tld" prefix="myFirstTag" %>
Maybe someone else has better idea.

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Illegal Access Error : using Custom Tags

Ive a very simple custom tag that try to print curent date on webpage but when I try to run it gives me following error
java.lang.IllegalAccessError: try to access class com.sun.xml.tree.ParentNode from class org.apache.jasper.compiler.TagLibraryInfoImpl
java.lang.IllegalAccessError: try to access class com.sun.xml.tree.ParentNode fr
om class org.apache.jasper.compiler.TagLibraryInfoImpl
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<html>
<head>
<%@ taglib uri="http://127.0.0.1:8080/examples/cdate.tld" prefix="examples"%>
</head>
<body>
The file is <examples:cdate/>
</body>
</html>
here goes cdate.tld code
<?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>examples</shortname>
<uri>http://www.mycompany.com/taglib</uri>
<info>An example tag library</info>
<tag>
<name>cdate</name>
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here is web.xml entry
<taglib>
     <taglib-uri>
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     </taglib-uri>
     <taglib-location>
          /WEB-INF/cdate.tld
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</taglib>
here is the taghandler class code
package datex;
import java.io.*;
import java.util.Date;
import javax.servlet.jsp.*;
import javax.servlet.jsp.tagext.*;
public class DateTag extends javax.servlet.jsp.tagext.TagSupport {
private String date;
public int doStartTag() throws JspException {
          StringBuffer html = new StringBuffer();
          date = new Date().toString();
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     html.append(date);
     try {
     pageContext.getOut().write(html.toString());
     } catch (IOException ioe) {
     throw new JspException(ioe.getMessage());
return EVAL_BODY_INCLUDE;
public void setDate(String s) {
this.date = s;
can any one plz hlp me

when i put the struts tags into the subforld such as /web-inf/tags , the jsp page tell me parsing tags error.
should i must put all this tags in the right fold?
i configure the url location in the web.xml as the route /web-inf/tags/....tld why invalid?

Error using custom tag library

Hi All,
          I am getting the following error:
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          Wed Mar 27 13:17:49 PST 2002
          The configutation is as follows
          Foo.jsp in documentRoot/jsp
          tld file in documentRoot/WEB-INF
          class files in documentRoot/WEB-INF/classes/examples.
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          at java.lang.Throwable.fillInStackTrace(Native Method)
          at java.lang.Throwable.fillInStackTrace(Compiled Code)
          at java.lang.Throwable.<init>(Compiled Code)
          at java.lang.Exception.<init>(Compiled Code)
          at java.lang.RuntimeException.<init>(RuntimeException.java:47)
          at weblogic.servlet.jsp.JspException.<init>(JspException.java:9)
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          Thanks for your help!!
          SundayFunday!


Could anyone please let me know what is going on here?
          SundayFunday!
          [email protected] (SundayFunday) wrote in message news:<[email protected]>...
          > Can anyone help me with this?!!
          >
          > Thanks!
          >
          > Sundayfunday.
          >
          > [email protected] (SundayFunday) wrote in message news:<[email protected]>...
          > > Hi All,
          > >
          > > I am getting the following error:
          > >
          > > On the browzer page when I invoke the foo.jsp page containing a tag
          > > library.
          > >
          > > Parsing of JSP File '/jsp/foo.jsp' failed:
          > > --------------------------------------------------------------------------------
          > > /jsp/foo.jsp(7): Could not parse deployment descriptor:
          > > org.xml.sax.SAXParseException: Could not parse taglib, starting at
          > > line 5
          > > probably occurred due to an error in /jsp/foo.jsp line 7:
          > > <%@ taglib uri="example-taglib.tld" prefix="eg" %>
          > > --------------------------------------------------------------------------------
          > > Wed Mar 27 13:17:49 PST 2002
          > >
          > >
          > >
          > > The configutation is as follows
          > >
          > > Foo.jsp in documentRoot/jsp
          > >
          > > tld file in documentRoot/WEB-INF
          > > class files in documentRoot/WEB-INF/classes/examples.
          > >
          > >
          > >
          > > The server is spitting out the following code:
          > >
          > > weblogic.servlet.jsp.JspException: (line 7): Could not parse
          > > deployment descript
          > > or: org.xml.sax.SAXParseException: Could not parse taglib, starting at
          > > line 5
          > > at java.lang.Throwable.fillInStackTrace(Native Method)
          > > at java.lang.Throwable.fillInStackTrace(Compiled Code)
          > > at java.lang.Throwable.<init>(Compiled Code)
          > > at java.lang.Exception.<init>(Compiled Code)
          > > at java.lang.RuntimeException.<init>(RuntimeException.java:47)
          > > at weblogic.servlet.jsp.JspException.<init>(JspException.java:9)
          > >
          > >
          > > Can anyone help me with this ?
          > >
          > > Thanks for your help!!
          > >
          > > SundayFunday!

Can i make own formatted textbox using custom tag

Hai,
Can i create own format textbox similar to vb activex control.for example i want make own formatted textbox for enter only numeric value if entry any alpha value it's show error.Is this possible using custom tag

Hai,
Can i create own format textbox similar to vb
activex control.for example i want make own
formatted textbox for enter only numeric value if
entry any alpha value it's show error.Is this
possible using custom tag
If you mean a custom text box in a web page without an applet (in other words an html component), then Java has nothing to do with it. And by mentioning activex (even only in a 'like' comparison), and custom tag, you are once again hinting that you want an html component. I think you need to place your request to a JavaScript Forum, which, once again, has absolutely nothing to do with Java.
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How to use custome tag lib in the JSP page?

How to use custome tag lib in the JSP page?...with JDeveloper

http://www.oracle.com/webapps/online-help/jdeveloper/10.1.2/state/content/navId.4/navSetId._/vtTopicFile.working_with_jsp_pages%7Cjsp_ptagsregistering~html/

How to use custom tag in jsp

sir
plz tell me how to use custom tag in jsp.plz describe it.
i will be thankful to u

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http://www.stardeveloper.com/articles/display.html?article=2001081301&page=1
http://www.onjava.com/pub/a/onjava/2000/12/15/jsp_custom_tags.html
http://jakarta.apache.org/taglibs/tutorial.html
http://www.ibm.com/developerworks/edu/j-dw-java-custom-i.html
http://www.herongyang.com/jsp/tag.html

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With an [HTTP status code|http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html] of 500, the most helpful information for debugging the problem is usually in the server's log file. There should be a stack trace in the web or application server's log file that will contain the specific root cause of this. It is often a NullPointerException or ClassNotFoundException or other "common" exception.

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Hi,
I created a custom portlet (a JSR 168 portlet) and I'm using a tag library that I previously developed. Normally it works fine, but sometimes I get a ClassCastException. Once I redeploy the portlet everything works again. This is Oracle Portal 10.1.4.
Has anybody encountered similar problems?
Here's the exception:
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