GET parameter is null, even though I'm passing a value

How do I get the following code to work?

String d=request.getParameter("bday");

GET parameter is null value but i m storing here html datepicker, even though I'm passing a value

Extra_User.jsp

<html>
<body>
<form name="frm1" method="post" action="Extra_User_Data.jsp">
<font size="4">Birthday<td><input type="date" id="bday">
</form>
</body>
</html>

Extra_User_Data.jsp

<%@page import="java.sql.*"%>
<%
try
{
String d=request.getParameter("bday");

        Connection cn;
        Statement st;

Class.forName("com.mysql.jdbc.Driver");
                cn=DriverManager.getConnection("jdbc:mysql://localhost:3306/main","root","");
st=cn.createStatement();
st.executeUpdate("INSERT INTO newuser(dob)VALUES('"+d+"')");                
out.println("Insert SuccessFull");
    }

    catch(SQLException sq)
    {
        out.println(sq.toString());
    }
%>

I am passing some date from html form to another .jsp file but while adding data in data base its shows null value.

it's shows error like...

com.mysql.jdbc.MysqlDataTruncation: Data truncation: Incorrect date value: 'null' for column 'dob' at row 1

Solution

Use name instead of id for your input