Java 中的 SimpleDateFormat(“Z”)
Z 表示“零时差”,在 ISO 8601 时间表示中也称为“祖鲁时间”(UTC)。不过,ACP 121 标准定义了一系列军事时区,并从格林尼治标准时间(GMT)推导出了“祖鲁时间”。
TimeZone 可以用 z、Z 或 zzzz 格式进行格式化。
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
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
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