1 SimpleDateFormat foo = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
2 System.out.println("foo:" + foo.format(new Date()));
3
4 Calendar gc = GregorianCalendar.getInstance();
5 System.out.println("gc.getTime():" + gc.getTime());
6 System.out.println("gc.getTimeInMillis():" + new Date(gc.getTimeInMillis()));
7
8 // 当前系统默认时区的时间：
9 Calendar calendar = new GregorianCalendar();
10 System.out.print("时区：" + calendar.getTimeZone().getID() + " ");
11 System.out.println("时间：" + calendar.get(Calendar.HOUR_OF_DAY) + ":" + calendar.get(Calendar.MINUTE));
12 // 美国洛杉矶时区
13 TimeZone tz = TimeZone.getTimeZone("America/Los_Angeles");
14 // 时区转换
15 calendar.setTimeZone(tz);
16 System.out.print("时区：" + calendar.getTimeZone().getID() + " ");
17 System.out.println("时间：" + calendar.get(Calendar.HOUR_OF_DAY) + ":" + calendar.get(Calendar.MINUTE));
18 Date time = new Date();
19
20 // 1、取得本地时间：
21 java.util.Calendar cal = java.util.Calendar.getInstance();
22
23 // 2、取得时间偏移量：
24 int zoneOffset = cal.get(java.util.Calendar.ZONE_OFFSET);
25
26 // 3、取得夏令时差：
27 int dstOffset = cal.get(java.util.Calendar.DST_OFFSET);
28
29 // 4、从本地时间里扣除这些差量，即可以取得UTC时间：
30 cal.add(java.util.Calendar.MILLISECOND, -(zoneOffset + dstOffset));
31
32 // 之后调用cal.get(int x)或cal.getTimeInMillis()方法所取得的时间即是UTC标准时间。
33 System.out.println("UTC:" + new Date(cal.getTimeInMillis()));
34
35 Calendar calendar1 = Calendar.getInstance();
36 TimeZone tztz = TimeZone.getTimeZone("GMT");
37 calendar1.setTimeZone(tztz);
38 System.out.println(calendar.getTime());
39 System.out.println(calendar.getTimeInMillis());
40
41 // SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'");
42 // df.setTimeZone(TimeZone.getTimeZone("UTC"));
43 // System.out.println(df.parse("2014-08-23T09:20:05Z").toString());
44
45 SimpleDateFormat df1 = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'");
46 Date t = new Date();
47 System.out.println(df1.format(t));
48 System.out.println(df1.format(df1.parse("2014-08-27T18:02:59.676Z")) + "***********");
49 df1.setTimeZone(TimeZone.getTimeZone("UTC"));
50 System.out.println(df1.format(t));
51 System.out.println("-----------");
52 System.out.println(df1.format(df1.parse("2014-08-27T18:02:59.676Z")) + "***********");
53 System.out.println("2014-08-27T18:02:59.676Z");
