Print out array to JTextArea

Question

Hello!
I having trouble to print out the array to a JTextArea.
This is an asignment so please do not spoonfeed me with code.
To test that I have added elements correctly in my array I sat it up to print out in console, wich works fine.
Please give me a hint on what I need to do in order to make it work. Below you see the code that is important for this part of the program.
Part of my controller:
//User press "Show Runners" button
          else if(user_action.equals("Show Runners")) {
               //Call method in model class
               model.showRunnersBy_startNR();
               //Display (I will use this once I print out to JTextArea)
               //view.setDisplayArea(""+model.showRunnersBy_startNR());
          }//End if statementPart of my model
//showRunnersBY_startNR
     public void showRunnersBy_startNR() {
          for(int i = 0; i <store.getIndex_runner(); i++) {
               System.out.println(store.global_runner.getRunners());     //Print out in console for now to see that the input and output is working correctly
//I should have this as "public String showRunnersBy_startNR()" instead with a return statment, correct?
//I tryed the above but did only manage to print out my latest input in the JTextArea
Part of my view// Sets the text displayed on the display area
     public void setDisplayArea(String message){
          display.setText(""+message);

Answer 1

Hello again!
I see :)
part of my model
     //showRunnersBY_startNR
     public void showRunnersBy_startNR() {
          for(int i = 0; i <store.getIndex_runner(); i++) {
               view.setDisplayArea(store.global_runner.getRunners());     
          }part of my view     // Sets the text displayed on the display area
     public void setDisplayArea(String message){
          display.append(""+message+"\n");
     }SetText() seemed to only print out the last one added to the array, so I I used the "append" instead.
Thanks for the hint.
Regards
Martin