在Java中以小时（hh（AM / PM为01-12））格式显示小时
Java日期中的“hh”格式类似于AM/PM中的01–12小时。使用SimpleDateFormat（“hh”）获得相同的格式；
//以hh格式显示小时
SimpleDateFormat simpleformat = new SimpleDateFormat("hh");
String strHour2 = simpleformat.format(new Date());
System.out.println("Hour in hh format = "+strHour2);上面，我们使用了SimpleDateFormat类，因此导入了以下包-
import java.text.SimpleDateFormat;
以下是一个例子-
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 {
//显示当前日期和时间
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()));
//显示日期
simpleformat = new SimpleDateFormat("dd/MMMM/yyyy");
String str = simpleformat.format(new Date());
System.out.println("Current Date = "+str);
//当前时间
simpleformat = new SimpleDateFormat("HH.mm.ss Z");
String strTime = simpleformat.format(new Date());
System.out.println("Current Time = "+strTime);
//以h格式显示小时
simpleformat = new SimpleDateFormat("h");
String strHour1 = simpleformat.format(new Date());
System.out.println("Hour in h format = "+strHour1);
//以hh格式显示小时
simpleformat = new SimpleDateFormat("hh");
String strHour2 = simpleformat.format(new Date());
System.out.println("Hour in hh format = "+strHour2);
}
}输出结果
Today's date and time = Mon, 26 Nov 2018 09:54:57 +0000 Current Date = 26/November/2018 Current Time = 09.54.57 +0000 Hour in h format = 9 Hour in hh format = 09