String dateStr = "Wed Dec 10 00:00:00 UTC 0800 2014"; //Wed Dec 10 00:00:00 UTC 0800 2014
SimpleDateFormat sdf = new SimpleDateFormat("EEE MMM dd HH:mm:ss 'UTC' yyyy",Locale.US);
try {
Date date = (Date) sdf.parse(dateStr);
String formatStr = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(date);
System.out.println(formatStr);
} catch (ParseException e) {
e.printStackTrace(); //To change body of catch statement use File | Settings | File Templates.
}