Jasperreport+jsp+sql like % problem

<%@page import="net.sf.jasperreports.engine.design.JasperDesign"%>
<%@page import="net.sf.jasperreports.engine.*" %>
<%@page import="net.sf.jasperreports.engine.JasperRunManager"%>
<%@page import="java.sql.DriverManager"%>
<%@page import="java.util.Map"%>
<%@page import="java.util.HashMap"%>
<%@page import="java.io.File"%>
<%@ page import="java.sql.*"%> 
<%@ include file = "db.jsp"%> //I have connect sql
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<% 
                    String sql = "select * from send where name like 'n%' "; 
                    ResultSet rs = stmt.executeQuery(sql); 
                    JRDataSource dataSource = new JRResultSetDataSource(rs);
            File reportFile;
            Map parameters = new HashMap();
           byte[] bytes={0};
            ServletOutputStream outStream ;
            int i=0;
             while(rs.next())
             {
          parameters.put("name",rs.getString("name"));
              parameters.put("youad",rs.getString("youad"));
          reportFile= new File(application.getRealPath("/report/report3.jasper"));
           bytes= JasperRunManager.runReportToPdf(reportFile.getPath(), parameters); 
 
            } 
                response.setContentType("application/pdf");
            response.setContentLength(bytes.length);
           outStream = response.getOutputStream();
            outStream.write(bytes, 0, bytes.length);
          outStream.flush();
            outStream.close(); 
 
            rs.close();
%> 

<%@page contentType="text/html" pageEncoding="UTF-8"%>
<%@ page import="java.sql.*"%> 
    <%! 
        String user = "root"; 
        String pass = ""; 
        String url = "jdbc:mysql://localhost....."; 
 
            Connection conn; 
          Statement stmt; 
         Class.forName("com.mysql.jdbc.Driver").newInstance(); 
                conn = DriverManager.getConnection(url,user,pass); 
               stmt = conn.createStatement();
 
 
    %>