Problem in displaying data in JTextArea

Question

Please help solve my problem regarding the JTextArea. I have two classes, Destination and AddRegistration class which both extends the JPanel. In the Destination class, there are three radiobuttons, when I click on this, I want the item to be displayed in the textarea of the AddRegistration class. The problem is that the text area does not display the item I selected in the radiobutton. What should I do?
the code in the Destination class is this:
public void actionPerformed(ActionEvent e){
labelChoice.setText("From: "+e.getActionCommand());
this.setText(e.getActionCommand());
AddReservation addRes = new AddReservation();
public void setText(String text){
destination = text;
public static String getText() {
return destination;
and the code in the AddRegistration class :
JTextArea outputarea = new JTextArea("From : ");
add(new Destination()); //From Destination
Destination instance1 = new Destination();
add(outputarea);
String t = "";
t = instance1.getText();
outputarea.append(t);

Answer 1

maybe u should revalidae and repit the panel after setting the text?