store value in checkbox from gridview

Please check the error... 

<%@ page language="java" import="java.sql.*" %>
<%
    Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");

    Connection con=null;
    ResultSet rst=null;
    Statement stmt=null;

    try
        {
            String a="jdbc:odbc:lib";
        con=DriverManager.getConnection(a);
        stmt=con.createStatement();
    }

    catch(Exception e)
        {
        System.out.println(e.getMessage());
    }

                Statement st = con.createStatement();
                        rst=st.executeQuery("select * from books ");



%>

<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">

        <title>Books</title>
        <script language="javascript">

function validation()
 {
 var count=0;
 for(var i=0;i<document.admin.chbox.length;i++)
 {
 if(document.admin.chbox[i].checked)
 {
 count++;
 }

}

if(count==0)
 {
 alert("check the messages to delete & u had limited msg");
 //document.msgchbox.checkbox.focus();
 return false;
 } 
else
 {
 return true;
 }

}


</script>
    </head>
    <body bgimage="header.jpg">
        <form name="admin" method="post" action="deletepage.jsp" onsubmit="return validation()">
     <center>
            <h1><b><font color="white">Books Available </font></b></h1>
                      <input type="submit" value=" DELETE "/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
 </div>
            <table bgcolor="pink" border="1" cellspacing="0" cellpadding="0">
            <tr>

                            <th bgcolor="darkblue"> <font color="yellow">S No.</font></th>
                                <th bgcolor="darkblue"> <font color="white">Group</font></th>
                <th bgcolor="darkblue"><font color="white">Name</font></th>
                <th bgcolor="darkblue"><font color="white">Author</font></th>
                                <th bgcolor="darkblue"><font color="white">Publisher</font></th>
                                <th bgcolor="darkblue"><font color="white">Edition</font></th>
                                <th bgcolor="darkblue"><font color="white">Copies</font></th>
                                <th>Delete</th>

            </tr>
                <%
                int no=1;

                while(rst.next())

                                {
                %>
                <tr>


                                    <td><%=no%></td>

                  <td><%=rst.getString("group_")%></td>
                                    <td><%=rst.getString("name")%></td>
                  <td> <%=rst.getString("author")%> </td>
                                  <td> <%=rst.getString("publisher")%> </td>
                                  <td> <%=rst.getString("edition")%> </td>
                                  <td> <%=rst.getString("copies")%> </td>

                                 <td><input type="checkbox" name="chbox<%=no%>" value="<%= rst.getString("name") %>" ></td>
                </tr>
                <%



                no++;

                }
    rst.close();
    stmt.close();
    con.close();
%>
            </table>
                        <u><h2><a href="Books.jsp"><font color="white">Back</font></a></h2></u>
                        <u><h2><a href="home.html"><font color="white">Home</font></a></h2></u>
            </center> 
        </form>
    </body>
</html>

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