Java 程序以 H(0-23)格式格式化小时
Java Date 中的“H”格式类似于 0、1、2、3、… 23 小时。使用 SimpleDateFormat("H") 以获取相同的格式。
// displaying hour in H format SimpleDateFormat simpleformat = new SimpleDateFormat("H"); String strHour = simpleformat.format(new Date()); System.out.println("Hour in H format = "+strHour);
以上,我们使用了 SimpleDateFormat 类,因此导入以下包:
import java.text.SimpleDateFormat;
以下是一个示例:
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("E, dd MMM yyyy HH:mm:ss Z"); System.out.println("Today's date and time = "+simpleformat.format(cal.getTime())); // displaying date simpleformat = new SimpleDateFormat("dd/MMMM/yyyy"); String str = simpleformat.format(new Date()); System.out.println("Current Date = "+str); // current time simpleformat = new SimpleDateFormat("HH.mm.ss Z"); String strTime = simpleformat.format(new Date()); System.out.println("Current Time = "+strTime); // displaying hour in H format simpleformat = new SimpleDateFormat("H"); String strHour = simpleformat.format(new Date()); System.out.println("Hour in H format = "+strHour); } }
输出
Today's date and time = Mon, 26 Nov 2018 09:56:14 +0000 Current Date = 26/November/2018 Current Time = 09.56.14 +0000 Hour in H format = 9
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