public MetalworksInBox() {
    super("In Box", true, true, true, true);

    DefaultMutableTreeNode unread;
    DefaultMutableTreeNode personal;
    DefaultMutableTreeNode business;
    DefaultMutableTreeNode spam;

    DefaultMutableTreeNode top = new DefaultMutableTreeNode("Mail Boxes");

    top.add(unread = new DefaultMutableTreeNode("Unread Mail"));
    top.add(personal = new DefaultMutableTreeNode("Personal"));
    top.add(business = new DefaultMutableTreeNode("Business"));
    top.add(spam = new DefaultMutableTreeNode("Spam"));

    unread.add(new DefaultMutableTreeNode("Buy Stuff Now"));
    unread.add(new DefaultMutableTreeNode("Read Me Now"));
    unread.add(new DefaultMutableTreeNode("Hot Offer"));
    unread.add(new DefaultMutableTreeNode("Re: Re: Thank You"));
    unread.add(new DefaultMutableTreeNode("Fwd: Good Joke"));

    personal.add(new DefaultMutableTreeNode("Hi"));
    personal.add(new DefaultMutableTreeNode("Good to hear from you"));
    personal.add(new DefaultMutableTreeNode("Re: Thank You"));

    business.add(new DefaultMutableTreeNode("Thanks for your order"));
    business.add(new DefaultMutableTreeNode("Price Quote"));
    business.add(new DefaultMutableTreeNode("Here is the invoice"));
    business.add(new DefaultMutableTreeNode("Project Metal: delivered on time"));
    business.add(new DefaultMutableTreeNode("Your salary raise approved"));

    spam.add(new DefaultMutableTreeNode("Buy Now"));
    spam.add(new DefaultMutableTreeNode("Make $$$ Now"));
    spam.add(new DefaultMutableTreeNode("HOT HOT HOT"));
    spam.add(new DefaultMutableTreeNode("Buy Now"));
    spam.add(new DefaultMutableTreeNode("Don't Miss This"));
    spam.add(new DefaultMutableTreeNode("Opportunity in Precious Metals"));
    spam.add(new DefaultMutableTreeNode("Buy Now"));
    spam.add(new DefaultMutableTreeNode("Last Chance"));
    spam.add(new DefaultMutableTreeNode("Buy Now"));
    spam.add(new DefaultMutableTreeNode("Make $$$ Now"));
    spam.add(new DefaultMutableTreeNode("To Hot To Handle"));
    spam.add(new DefaultMutableTreeNode("I'm waiting for your call"));

    JTree tree = new JTree(top);
    JScrollPane treeScroller = new JScrollPane(tree);
    treeScroller.setBackground(tree.getBackground());
    setContentPane(treeScroller);
    setSize(325, 200);
    setLocation(75, 75);
  }