die garantiert plattformabhängige lösung :-)

public class NastyMailClientDemo {
    
    public static void main(String[] args) {
        try {
            
            Runtime.getRuntime().exec(
            new String[] {
                "rundll32",
                "url.dll,FileProtocolHandler",
                "mailto:bla@bla.com"
                + "?cc=oliver@herbstkind.de"
                + "&bcc=oliver@herbstkind.de"
                + "&subject=Hallo%20Oliver"
                + "&body=Message%20Body%20Text."
                + "%0AENDE."
            });
        } catch (Exception ex) {
            ex.printStackTrace();
        }
    }
}

a really tricky idea:

public Object deepClone()
{
	try
	{
		ByteArrayOutputStream b = new ByteArrayOutputStream();
		ObjectOutputStream out = new ObjectOutputStream (b);
		out.writeObject (this);
		ByteArrayInputStream bin = new ByteArrayInputStream (b.toByteArray());
		ObjectInputStream oi = new ObjectInputStream (bin);
		return (oi.readObject());
	}
	catch (Exception e)
	{
		System.out.println ("Exception : " + e.getMessage());
		return null;
	}
}

problem
you have a date as a string in format dd.mm.yyyy and you want to increase it by x days. this is a little mess and looks complicated. maybe there's a quicker or cleaner solution!?

solution

public static String increaseDays(String s, int x) {
	SimpleDateFormat sdf = new SimpleDateFormat("dd.MM.yyyy");
	String ret = null;
	try {
		Date d = sdf.parse(s);
		GregorianCalendar gc = new GregorianCalendar();
		gc.setTime(d);
		gc.add(GregorianCalendar.DATE, x);
		d = gc.getTime();
		ret = sdf.format(d);
	} catch (Exception ex) {
		ex.toString();
	}
	return ret;
}