I am unable to update a record using sql statement in java. The
variable numUpdated returns 0, so I think something is wrong with my
code. The objective on thiis numUpdated variable was to return the
number of rows changed. Please help!

Code
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import java.sql.*;

public class simpleConn
{
    Connection con;
    Statement s;
    ResultSet rs;

    public simpleConn()
    {
        try
        {
            Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
            String filename = "Students.mdb";
            String database = "jdbc:odbc:Driver={Microsoft Access Driver
(*.mdb)}; DBQ=" +
                             filename.trim() + ";DriverID=22; READONLY=false}";
            con = DriverManager.getConnection(database, "", "");
            s = con.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,
ResultSet.CONCUR_UPDATABLE);
            s.execute("select * from tStudents");

            String strUpdate = "Update tStudents set Name = 'Mark', Course =
'IELTS' where No = 15";

            int numUpdated = s.executeUpdate(strUpdate);
            System.out.println("updated rows" + numUpdated);

        }

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

    }

    public static void main(String args[])
    {
        simpleConn su = new simpleConn();
    }

}

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