How to set text of a JTextField of a JFrame from another JFrame?

Question

I have 2 JFrame classes:

1. The ViewPatientLogin JFrame, which is basically just a frame where the user inputs a Patient's name, and is then taken to the second JFrame where the Patient's details are displayed.

2. The ViewPatient JFrame, which displays all of the relevant Patient info.

What I want to do is to have the text input into the JTextField txtfFullName in the ViewPatientLogin JFrame be set as the text in the ViewPatient frame's corresponding JTextField.

I have set the buttons and jtextfields of both JFrames to static and public.

However, when I enter the button ActionPerformed code, upon creating a new instance of the ViewPatient object, I cannot access any of the attributes in the ViewPatient JFrame.

Anyone, please help? This is a really important project for my final year portfolio, and I'm really stuck.

EDIT: Here is the button ActionPerformed code that's giving me a headache:

private void btnOKActionPerformed(java.awt.event.ActionEvent evt) {                                      
        // TODO add your handling code here:
        ViewPatient x = new ViewPatient();
        //cannot access the textfield of x from here
        //x.txtfFullName does not even register
        
    }                            

Answer 1

public class ViewPatient extends JFrame
{
  public ViewPatient(String n)
  {
    txtfFullName=n;
  }
}


private void btnOKActionPerformed(java.awt.event.ActionEvent evt) {                                      
        // TODO add your handling code here:
        ViewPatient x = new ViewPatient(patientName);
        x.setVisible(true);
    }