How to setText for a text Field in a class from another class

I want to access JTextField of a class from another class , From the new class i want to setText to the textField.

from class patient_details i want to access the JTextField present in class Admission_screen. This is code which i used in patient_details class to add text in text field present in admission_screen class.

 Admission_screen admit=new Admission_screen();
                 admit.t2.setText("xxx");

t2 is the textfiels present in admission_screen class.

this is not working help me with your suggestions

Add this method to Admission_screen:

public void setT2Text(String text){
    t2.setText(text);
}

Call it using the admit object you created. Like so: admit.setT2Text("txt");