public void paintComponent(Graphics g) {
super.paintComponent(g);
File f = new File("Data.txt");
try {
textArea.setText("");
reader = new BufferedReader(new FileReader(f));
String str = "";
while (!(str = reader.readLine()).equals("")) {
textArea.append(str + "\n");
}
reader.close();
} catch (Exception e) {
System.out.println(e);
}
repaint();
}
