Ecco qua
codice:
		SimpleDateFormat sdfInput = new SimpleDateFormat( "EEE MMM dd HH:mm:ss zzz yyyy", Locale.US ); 
		String textDate = "Wed Mar 08 16:47:38 CET 2006"; 
		Date date = null;
		try {
			date = sdfInput.parse( textDate );
		} catch (ParseException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} 

		SimpleDateFormat sdfOutput = new SimpleDateFormat ( "yyyy-MM-dd HH:mm:ss.SSS" );
		String result = sdfOutput.format( date );