String text = "Fri Apr 24 19:00:58 CST 2015";
DateFormat formate1 = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
DateFormat formate2 = new SimpleDateFormat("EEE MMM dd HH:mm:ss zzz yyyy",Locale.ENGLISH);
Date date = formate2.parse(text);
String dateString = formate1.format(date);
System.out.println(dateString);