Question

i am developing a GUI using Java Swing. but i got stuck here.
Is it not possible to add text to the single “JTextArea” dynamically?

Ex:

class Sample extends JFrame{

    public static void fn(int n) {
        JFrame f = new JFrame();
        JTextArea ta = new JTextArea();
        f.add(ta);
        f.setVisible(true);
        for(int i=1;i<=n;i++){
           //some processing is done
         ta.setText(" step is done");
           // some other stuffs  
        }  
    }
}

this is just part of my source code. My problem here is , in this code for each iteration of the “for loop” i am getting a new frame with the text ” step is done”. but instead i want it to be displayed on a single frame ‘n; times.

Answer 1

setText() method sets the text, not appends its. You’ll have to do that manually:

ta.setText(ta.getText() + "\nStep is done.");

EDIT:

My bad, I didn’t use Swing for a while and simply forgot about such a basic thing as append(). You should accept @Hovercraft Full Of Eels answer as it’s a correct and much better one.