private void OKbtnActionPerformed(java.awt.event.ActionEvent evt)
{

    try{
        String password = PassJP.getText();
        int passint = Integer.parseInt(password);
        conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/banking application","root","");
              String query = "SELECT Balance FROM user WHERE Password =" +passint;

  Statement st = conn.createStatement();
  ResultSet rs = st.executeQuery(query);
    int balance = rs.getInt("Balance");

     String WAmmount = WithAmmTF.getText();
    int WAmmountint = Integer.parseInt(WAmmount);

    int newbalance = balance - WAmmountint;
        Statement s=conn.createStatement();
s.executeUpdate("INSERT INTO `user`(Balance) VALUE ('"+newbalance+"') where Password="+ passint);

    conn.close();

    }
        catch (SQLException e) {
        System.err.println("Got an exception! ");
        System.err.println(e.getMessage());
    }