jsp error

<p>hi, could please help whenever i run jsp file in my eclipse i got this error.my jsp file is</p>

&lt;%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>

<body>

<form action="sreenu" method="post">
<table>
<tr><td>username</td><td><input type="text" name="username" maxlength="16"><br></td></tr>
<tr><td>password</td><td><input type="password" name="password" maxlength="10"><br></td></tr>
<tr><td>re-enter password</td><td><input type="password" name="repass" maxlength="10"><br></td></tr>
<tr><td><input type="submit" value="submit"></td></tr>
</table>
</form>

</body>

</html>

HTTP Status 500 - 


type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

org.apache.jasper.JasperException: java.lang.NullPointerException
    org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:522)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:356)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

root cause 

java.lang.NullPointerException
    org.apache.jsp.first<em>jsp.</em>jspInit(first_jsp.java:22)
    org.apache.jasper.runtime.HttpJspBase.init(HttpJspBase.java:52)
    org.apache.jasper.servlet.JspServletWrapper.getServlet(JspServletWrapper.java:159)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:329)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

note The full stack trace of the root cause is available in the Apache Tomcat/6.0.18 logs.

Apache Tomcat/6.0.18

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