[Fubarable]

Create an ArrayList<String> and place the String you generate from the data returned into this list. Then create a String array from this list and show it in the JOptionPane. For instance:

      String[] strings = {"mon", "tues", "wed", "thurs", "fri"};
      
      List<String> stringList = new ArrayList<String>();
      for (String string : strings) {
         // here you will use instead this:
         // String string = "Document: "+idClient1+"\nName: "+NameClient+"\nDate: "+Date1
         stringList.add(string);
      }
      
      
      String[] stringArray = stringList.toArray(new String[0]);
      JOptionPane.showMessageDialog(null, stringArray);