Enumerate the Lines in a JTextArea Component in Java

import java.awt.Font;
//from   ww w .ja  va2  s  . c o m
import javax.swing.JFrame;
import javax.swing.JTextArea;
import javax.swing.text.BadLocationException;
import javax.swing.text.Element;

public class Main extends JFrame {

  public Main() {
    JTextArea textArea = new JTextArea("Initial Text");
    textArea.setFont(new Font("LucidaSans", Font.PLAIN, 40));
    add(textArea);    

    Element paragraph = textArea.getDocument().getDefaultRootElement();
    int contentCount = paragraph.getElementCount();
    for (int i = 0; i < contentCount; i++) {
      Element e = paragraph.getElement(i);
      int rangeStart = e.getStartOffset();
      int rangeEnd = e.getEndOffset();
      String line = null;
      try {
        line = textArea.getText(rangeStart, rangeEnd - rangeStart);
      } catch (BadLocationException e1) {
        // TODO Auto-generated catch block
        e1.printStackTrace();
      }
      System.out.println(line);
    }
  }

  public static void main(String[] args) {
    JFrame frame = new Main();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    frame.pack();
    frame.setVisible(true);
  }
}