Java中的SimpleDateFormat（“ Z”）
Z表示“零时偏移”，在ISO8601时间表示中也称为“祖鲁时间”(UTC)。但是，ACP121标准定义了军事时区列表，并从格林威治标准时间(GMT)得出“祖鲁时间”。
可以将TimeZone格式化为z，Z或zzzz格式。
以下是显示如何实现SimpleDateFormat（“Z”）的示例-
示例
import java.text.Format;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Calendar;
public class Demo {
public static void main(String[] args) throws Exception {
// displaying current date and time
Calendar cal = Calendar.getInstance();
SimpleDateFormat simpleformat = new SimpleDateFormat("dd/MMMM/yyyy hh:mm:s zzzz");
System.out.println("Today's date = "+simpleformat.format(cal.getTime()));
// displaying hour
Format f = new SimpleDateFormat("H");
String strHour = f.format(new Date());
System.out.println("Current Hour = "+strHour);
// displaying minutes
f = new SimpleDateFormat("mm");
String strMinute = f.format(new Date());
System.out.println("Current Minutes = "+strMinute);
// displaying seconds in two-digits
f = new SimpleDateFormat("ss");
String strSeconds = f.format(new Date());
System.out.println("Current Seconds = "+strSeconds);
f = new SimpleDateFormat("a");
String strMarker = f.format(new Date());
System.out.println("Current AM/PM Marker = "+strMarker);
f = new SimpleDateFormat("Z");
String strOffset = f.format(new Date());
System.out.println("Offset = "+strOffset);
}
}输出结果
Today's date = 26/November/2018 08:18:9 Coordinated Universal Time Current Hour = 8 Current Minutes = 18 Current Seconds = 09 Current AM/PM Marker = AM Offset = +0000