java - Unknown column 'jay' in 'field list' -

i trying insert values id(not auto incr), eid, ename, esalary, eaddress mysql table named employee following exception showed

java.sql.sqlexception: unknown column 'jay' in 'field list'

1. insert.jsp

<form method="post" action="insertbackend.jsp">     <table border="1">         <tr>             <td style="font-size:20px ">enter employee id: </td>             <td><input type="text" name="id" /></td>         </tr>         <tr>             <td style="font-size:20px ">enter employee name: </td>             <td><input type="text" name="en" /></td>         </tr>         <tr>             <td style="font-size:20px ">enter employee salary: </td>             <td><input type="text" name="es" /></td>         </tr>         <tr>             <td style="font-size:20px ">enter employee address: </td>             <td><input type="text" name="ea" /></td>         </tr>         <tr>             <td style="border-right:0em;"></td>             <td style="border-left:0em;"><input type="submit" value="insert"></td>         </tr>     </table>     </form> 

2. insetbackend.jsp

<% try { string eid=(string)request.getparameter("id"); string en=(string)request.getparameter("en"); string es=(string)request.getparameter("es"); string ea=(string)request.getparameter("ea");  class.forname("com.mysql.jdbc.driver"); connection c=drivermanager.getconnection("jdbc:mysql://localhost:3306/test","root","root"); statement s=c.createstatement();  s.executeupdate("insert employee values("+eid+","+en+","+es+","+ea+")"); c.close(); s.close(); } catch(exception e) {     out.println(e); }  %> 

edit line:

s.executeupdate("insert employee values("+eid+","+en+","+es+","+ea+")"); 

in to:

s.executeupdate("insert employee values('"+eid+"','"+en+"','"+es+"','"+ea+"')"); 

since using strings, must add quotes surrounded..