Question

I have a jtable on my GUI. (tableRealProperty). I need to add, delete and update the data inside the table. and this data are from a database where it has a primary key called ClientID. the columns inside the jtable are “Location” and “Area”.
If i select a certain row from the jtable, it should be deleted as well as from the database, of course. My problem is that, when i click my delete button, not only the selected row is deleted but also all the data inside the table of that certain client..

here’s my code for delete:

  private void cmdDelRPropActionPerformed(java.awt.event.ActionEvent evt) {                                            
String sql = "delete FROM tblrealProperty where tblrealproperty.ClientID = ?";

    try {
    pst = conn.prepareStatement(sql);
    pst.setString(1,  txtClientID.getText());
    ((DefaultTableModel)tableRealProperty.getModel()).removeRow(tableRealProperty.getSelectedRow());
    pst.execute();
    JOptionPane.showMessageDialog(null, "Deleted");


   } catch (Exception e) {
      e.printStackTrace();
      JOptionPane.showMessageDialog(null, e);
     }

}

Answer 1

If i select a certain row from the jtable, it should be deleted as
well as from the database, of course. My problem is that, when i click
my delete button, not only the selected row is deleted but also all
the data inside the table of that certain client..

This sounds like you have a foreign key to tblrealproperty set on the client table with cascade delete. That means, if a client is deleted from tblrealproperty, all corresponding data with a foreign key pointed to the deleted row in tblrealproperty are deleted as well. It is a feture inside DB to prevent inconstistencies.