private String getAEOEUESZ(char buchstabe) { switch(buchstabe) { case 'ä': return "ae"; case 'ö': return "oe"; case 'ü': return "ue"; case 'ß': return "ss"; case 'Ä': return "Ae"; case 'Ö': return "Oe"; case 'Ü': return "Ue"; default: return "" + buchstabe; }}