Help with GUIs please & methods

[killerknight141]

Hi, I am creating a GUI for my java term project. This GUI is supposed to represent a database of students and teachers, and an user can edit this database if they would like. I have been taking my java class for 5 months now, but I have been doing extremely bad in it, and I barely understand any of it, so please excuse me if my question seem obvious.

GUi question:
1). After a long time I have been able to create three buttons, which represent teacher, student and other staff. I equipped each button with a button listener, but I need to open another GUI box which will allow the user selected people to be edited. For instance, if the user presses on the teacher, I want to open another box where the user can enter the teacher's name, address, experience etc. I don't really know what to do after this. I don't know what I have to do to open another GUI box, for adding/deleting people from the database.

2). Which brings me to my second method question. I am really confused as to what my method should be for adding/deleting a teacher. But I thought that I should create a method which returns an ArrayList<String>. This is what i have so far, but I think it is TOTALLY wrong:

  public ArrayList<String> addTeacher (String name, String address, String classes, String department, int years, int salary)
  {
    ArrayList<String> teacherList = new ArrayList<String>();
    teacherList.add(new String (name + address + classes+ department + years + salary));
 
    return teacherList;
  }

Any constructive criticism and help is welcomed. If you can help, I will be in your favor.

[shadihrr]

I guess you have to write three GUI classes, student, teacher and staffs and when you run each button the listener should call them. or you could repaint your GUI and add the relevant table to your current GUI.therefor it's cool to add more than one panel in order to repaint just one panel .