在 Java 中使用 SimpleDateFormat(“M”) 显示月份数字

要显示月份数字，请使用 SimpleDateFormat(“M”)

// displaying month number
Format f = new SimpleDateFormat("M");
String strMonth = f.format(new Date());
System.out.println("Month Number = "+strMonth);

由于我们在上面使用了 Format 和 SimpleDateFormat 类，因此导入以下包。此外，我们还使用了 Date。

import java.text.Format;
import java.text.SimpleDateFormat;
import java.util.Date;

示例

 动态演示

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");
      System.out.println("Today's date and time = "+simpleformat.format(cal.getTime()));
      // displaying date
      Format f = new SimpleDateFormat("dd/MMMM/yyyy");
      String strDate = f.format(new Date());
      System.out.println("Current Date = "+strDate);
      // displaying month number
      f = new SimpleDateFormat("M");
      String strMonth = f.format(new Date());
      System.out.println("Month Number = "+strMonth);
      // current time
      f = new SimpleDateFormat("HH.mm.ss Z");
      String strTime = f.format(new Date());
      System.out.println("Current Time = "+strTime);
      // displaying hour
      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
      f = new SimpleDateFormat("ss");
      String strSeconds = f.format(new Date());
      System.out.println("Current Seconds = "+strSeconds);
   }
}

输出

Today's date and time = 26/November/2018 09:16:16
Current Date = 26/November/2018
Month Number = 11
Current Time = 09.16.16 +0000
Current Hour = 9
Current Minutes = 16
Current Seconds = 16

更新于： 26-Jun-2020

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