superscript in Java String

Just in case somebody uses theese hand made functions:

public static String superscript(String str) {
    str = str.replaceAll("0", "⁰");
    str = str.replaceAll("1", "¹");
    str = str.replaceAll("2", "²");
    str = str.replaceAll("3", "³");
    str = str.replaceAll("4", "⁴");
    str = str.replaceAll("5", "⁵");
    str = str.replaceAll("6", "⁶");
    str = str.replaceAll("7", "⁷");
    str = str.replaceAll("8", "⁸");
    str = str.replaceAll("9", "⁹");         
    return str;
}

public static String subscript(String str) {
    str = str.replaceAll("0", "₀");
    str = str.replaceAll("1", "₁");
    str = str.replaceAll("2", "₂");
    str = str.replaceAll("3", "₃");
    str = str.replaceAll("4", "₄");
    str = str.replaceAll("5", "₅");
    str = str.replaceAll("6", "₆");
    str = str.replaceAll("7", "₇");
    str = str.replaceAll("8", "₈");
    str = str.replaceAll("9", "₉");
    return str;
}

Note, that there is a little ambiguity about ¹²³, because they are acii symobls 251, 253 and 252 and they are also utf-symbols. I prefer to use acsii because they more probably are supproted by font, but here you should decide what you actually want to use.

Check out java.text.AttributedString, which supports subscripts and more. e.g., in your paintComponent() you could go:

   public void paintComponent(Graphics g) {
      super.paintComponent(g);
      AttributedString as = new AttributedString("I love you 104 gazillion");
      as.addAttribute(TextAttribute.SUPERSCRIPT, TextAttribute.SUPERSCRIPT_SUPER, 13, 14);
      as.addAttribute(TextAttribute.FOREGROUND, Color.RED, 2, 6);
      g.drawString(as.getIterator(), 20, 20);
   }