Insert Text to JTextArea in Java

   //from w  ww.  ja  va2 s  .  co  m
import java.awt.Font;

import javax.swing.JFrame;
import javax.swing.JTextArea;

public class Main extends JFrame {

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

    // Insert some text at the beginning
    int pos = 0;
    textArea.insert("java2s.com", pos);    
  }

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

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