Java, mysql, xml related problem.

void cmgUpdateNormalHours1_actionPerformed(ActionEvent e) {   ///button update
if(e.getActionCommand().equals("Update"))
{
  ResultSet Result;

 
 String proj= txtProjectNumber.getText();//gets project number
 String day= txtDate1.getText();//gets date
 String paivitus = txtNormalHours1.getText(); //gets  normalhours
 int changes=0;

  String sqlClause="select count(*) from hours where days ='"+day+"'";
 Tietokantayhteys Conn = new Tietokantayhteys(); ///connection to the database
 Result= Conn.Query(sqlClause);
 String result=null; //different result than Result

 try {
   Result.next();
   result=Result.getString(1);
 } catch(Exception ex) {
   ex.printStackTrace();
 }

 int tempa=Integer.parseInt(result);
 if(tempa==1)			
 {
   String sqlClause1 = "update hours set normalhours= '" + paivitus + "'" +
       "where proj_id = " + proj + " and days ='" + day + "'";
   tempa=Conn.UpdateQuery(sqlClause1);
 }
   if(tempa==0)
   {
     String sqlClause2= "insert into hours (proj_id, days, normalhours) " +
"values ("+proj+",'"+day+"','"+paivitus+"')";
     tempa=Conn.UpdateQuery(sqlClause2);
   }

package simple;


import java.sql.*;

public class Tietokantayhteys
{
	///määritellään luokan tarvitsemat oliot
        ///define object which class need
	Connection Conn;
	Statement st;
	ResultSet Result;

	

	public Tietokantayhteys()
	{
		
                //open connection to database
		try
		{
			                        ///load database driver
			Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");

			
			Conn = DriverManager.getConnection
			( "jdbc:odbc:pro","root","");

			
                        //set start value to Statement object
			st = Conn.createStatement();

		} catch (Exception e)

		{
		e.printStackTrace();
		}

	}

	
        // query method for select
	public ResultSet Query(String sqlClause)
		{

			try {
			Result = st.executeQuery(sqlClause);

				} catch (Exception e)
				 { e.printStackTrace();
				}

			return Result;
		}

	
        /// update method for update inquery
	public int UpdateQuery(String sqlClause)
	{


		
                //saves how many changes has been made
		int muutoksia=0;

		try {
		muutoksia = st.executeUpdate(sqlClause);   ///<---muutoksia means == changes

			} catch(Exception e)
			{ e.printStackTrace();
			}

		return muutoksia;
	}
	
////close all connections
	public void suljeYhteys()  ///<---means close connection
	{
		try {

		st.close();
		Conn.close();
			} catch(Exception e)
			{ e.printStackTrace();
	}
}
}