public String DateAdd(int days, String date)
{
String tag = date.substring(0,2);
String monat = date.substring(3,5);
String jahr = date.substring(6);
Calendar cal = Calendar.getInstance();
cal.set(new Integer (jahr).intValue(),new Integer (monat).intValue()-1,new Integer (tag).intValue());
cal.add(Calendar.DAY_OF_MONTH,days);
tag = Integer.toString(cal.get(Calendar.DAY_OF_MONTH));
monat = Integer.toString(cal.get(Calendar.MONTH)+1);
jahr = Integer.toString(cal.get(Calendar.YEAR));
if (tag.length()==1) tag="0"+tag;
if (monat.length()==1) monat="0"+monat;
return tag+"."+monat+"."+jahr;
}