Swing timer synchronization

问题

I'm confused about how the Swing timer work. In the code below, I want to display from 0~9 every 400ms in the first text field when press START (once). After that the second text field will display "Finished".

public class Main extends JPanel{

private static final long serialVersionUID = 1L;
private JButton bStart;
private JTextField tTest;
private JTextField tNumber;

Main(){
    bStart = new JButton("Start");
    bStart.addActionListener(new ActionListener(){
        @Override
        public void actionPerformed(ActionEvent arg0) {
            // TODO Auto-generated method stub
            displayNumbers();
        }       
    });

    tTest = new JTextField(null, 30);
    tNumber = new JTextField(" ", 30);
    tNumber.setEditable(false);
    this.setSize(300, 100);
    this.add(bStart);
    this.add(tNumber);
    this.add(tTest);

}

public void displayNumbers(){
    new Timer(400, new ActionListener() {
        int i = 0;
        public void actionPerformed(ActionEvent evt) {
            if(i<10){
                tNumber.setText(Integer.toString(i));
                i++;
            }       
            else
                ((Timer)evt.getSource()).stop();
        }
    }).start(); 

    tTest.setText("Finished");
}

public static void createAndShowGUI(){
    JFrame frame = new JFrame("test");
    frame.add(new Main());
    frame.setSize(400, 150);
    frame.setVisible(true); 
}


public static void main(String args[]){
    SwingUtilities.invokeLater(new Runnable(){
        @Override
        public void run() {
            // TODO Auto-generated method stub
            createAndShowGUI();
        }           
    });     
}
}

However, it first displays "Finished" before finishing displaying 0 ~ 9. I think the Swing timer works also in EDT, so "tTest.setText("Finished");" will be executed after timer thread. Why does not it work? How do I wait finishing displaying 0 ~ 9 then print "Finished"? Thanks!

Thanks for your answers. In fact what I want to ask is in general:

new Timer(delay, new ActionListener() {

    public void actionPerformed(ActionEvent evt) {
            doSomething();
    }

}).start(); 

    doOthers();

How to let doOthers() execute after all the doSomething()? (In some cases, we cannot put doOthers() inside actionPerformed function, as some answers mentioned).