AJUDA - File "/cabecalho.jsp" not found

Front-end
#1

Sou iniciante em em desenvolvimento web, tava executnado meu proejto quando me deparei com esse erro:
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: javax.servlet.ServletException: File "/cabecalho.jsp" not found
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:522)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:398)
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

javax.servlet.ServletException: File "/cabecalho.jsp" not found
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:319)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:968)
org.apache.jsp.formInserindoDados_jsp._jspService(formInserindoDados_jsp.java:66)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:374)
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/6.0.20 logs.
Apache Tomcat/6.0.20

Mas eu criei o cabecalho:

?xml version=“1.0” encoding=“ISO-8859-1” ?>

Trabalhando com DAO e MODEL 2 
    <form action="usuario?cmd=adc" method="post">
    <table>
        <tr>
            <td>Nome:</td><td><input type="text" name="nome_completo" /></td>
        </tr>
        <tr>
            <td>Login:</td><td><input type="text" name="nome_usuario" /></td>
        </tr>
        <tr>
            <td>Senha:</td><td><input type="text" name="senha" /></td>
        </tr>
        <tr>
            <td>Perfil:</td><td><input type="text" name="perfil" /></td>
        </tr>
    </table>
    <br>
    <tr>
        <td colspan="2">
            <input type="submit" name="btCadastrar" value="Enviar" />
        </td>
    </tr>
</center>
</form>

Alguém pode me ajudar?

Desde já muito obrigado!

#2