Update Textfield between 2 jFrames

Question

Hi,
I'm new to java and struggle to get my head around the following problem:
I've got a main frame (frame 1) where the user can press a button to display a seperate data selection frame (frame 2). Once the user made his selection I need to update textfields on the frame 1 with that information.
Currently I got one class in frame one declared as public static so I can write data from the second frame into that classes properties.
How can I tell frame 1 that the user has mad his selection (frame 2 is hidden again) so I can update textfields on frame 1 with the information stored in the class?
Is that done via an event listener? Can I create an event listener in frame 1 'listening' for the hide event of frame 2? If yes how does the code for that looks like?
Thanks!!!

Answer 1

Hi MelGohan,
thanks for the reply! I" think I'm almost there :-))
in form 1 this is the event handler for the button showing form 2
private void jBtnSelectGPActionPerformed(java.awt.event.ActionEvent evt) {
//window classes
JFrame SelectGP = new SelectGPForm(this);
//show gp select window
SelectGP.setVisible(true);
and this the method to update the text fields:
public void upDateGPTextFields (Address GPTest) {
//code
in form 2:
public SelectGPForm(JFrame Parent ) {
CallingFrame=Parent;
//code
there is an eventhandler in form 2 which looks after the ok button:
private void jBtnSelectGPOKActionPerformed(java.awt.event.ActionEvent evt) {
//call to form 1 method to update textfields here
So the parent frame reference gets transfered into the frame 2 constructor but how do I then use this in the event handler??
I declared a private variable in Form 2 (CallingFrame) to hold the parent frame reference so I can use it in the ok button event handler. But how exactly do I then access the calling frame methods??
Thanks!