Unable RUN Java Bean in JSP under Tomcat 5.0

From:

k.chinnareddy@gmail.com

Newsgroups:

comp.lang.java.programmer

Date:

Wed, 9 Jan 2008 02:25:49 -0800 (PST)

Message-ID:

<e779efcb-83a3-455e-84ee-f69bfc208a44@e4g2000hsg.googlegroups.com>

Hi
This is my bean source.

public class Counter1 implements java.io.Serializable
{
int count=0;
public Counter1(){}
public int getCount()
{
count++;
return this.count;
}

public void setCount(int count)
{
this.count=count;
}
}

I have stored class file under example web application

C:\Program Files\Apache Software Foundation\Tomcat 5.0\webapps\example
\WEB-INF\classes\MyBean

jsp file placed under example

C:\Program Files\Apache Software Foundation\Tomcat 5.0\webapps\example

<%@ page import="MyBean.*" %>
<html>
<head>
<title>Bean class</title>
</head>
<body>
<jsp:useBean id="hello" class="MyBean.Counter1"/>
    <jsp:setProperty name="hello" property="count" value="3" />
    <jsp:getProperty name="hello" property="count" />

</body>
</html>

When I am calling my jsp file
http://localhost:8080/example/counter.jsp

error is like this:

javax.servlet.ServletException: MyBean/Counter1 (wrong name: Counter1)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:244)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

root cause

java.lang.NoClassDefFoundError: MyBean/Counter1 (wrong name: Counter1)
    java.lang.ClassLoader.defineClass1(Native Method)
    java.lang.ClassLoader.defineClass(ClassLoader.java:620)
    java.security.SecureClassLoader.defineClass(SecureClassLoader.java:
124)

org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:
1634)

org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:
860)

org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:
1307)

org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:
1189)
    org.apache.jasper.compiler.Generator
$GenerateVisitor.visit(Generator.java:1214)
    org.apache.jasper.compiler.Node$UseBean.accept(Node.java:1116)
    org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2163)
    org.apache.jasper.compiler.Node$Visitor.visitBody(Node.java:2213)
    org.apache.jasper.compiler.Node$Visitor.visit(Node.java:2219)
    org.apache.jasper.compiler.Node$Root.accept(Node.java:456)
    org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2163)
    org.apache.jasper.compiler.Generator.generate(Generator.java:3272)
    org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:244)
    org.apache.jasper.compiler.Compiler.compile(Compiler.java:470)
    org.apache.jasper.compiler.Compiler.compile(Compiler.java:451)
    org.apache.jasper.compiler.Compiler.compile(Compiler.java:439)

org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:
511)

org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:
295)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:
292)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

note The full stack trace of the root cause is available in the Apache
Tomcat/5.0.28 logs.

Please tell me what would be the problem. Your help will be
appreciated
May be I am missing Important step