Java格式化CST日期时间

Date date = new Date();
System.out.println(date);

String date = "Thu Aug 27 18:05:49 CST 2015";
SimpleDateFormat sdf = new SimpleDateFormat("EEE MMM dd HH:mm:ss zzz yyyy", Locale.US);
Date d = sdf.parse(date);
String formatDate = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(d);

System.out.println(formatDate);

Calendar cd = Calendar.getInstance();
SimpleDateFormat sdf = new SimpleDateFormat("EEE d MMM yyyy HH:mm:ss 'GMT'", Locale.US);
sdf.setTimeZone(TimeZone.getTimeZone("GMT+8")); // 设置时区为GMT  +8为北京时间东八区
String str = sdf.format(cd.getTime());
System.out.println(str);