使用 Java Calendar 获取月份和年份的周


若要使用 Calendar 类,请导入以下包。

import java.util.Calendar;

创建一个 Calendar 类对象。

Calendar cal = Calendar.getInstance();

现在,使用以下字段获取月份和年份的周。

Calendar.WEEK_OF_MONTH
Calendar.WEEK_OF_YEAR

以下是示例。

示例

 演示

import java.util.Calendar;
public class Demo {
   public static void main(String[] args) {
      Calendar cal = Calendar.getInstance();
      // current date and time
      System.out.println(cal.getTime().toString());
      // date information
      System.out.println("
Date Information..........");       System.out.println("Year = " + cal.get(Calendar.YEAR));       System.out.println("Month = " + (cal.get(Calendar.MONTH) + 1));       System.out.println("Date = " + cal.get(Calendar.DATE));       // week       System.out.println("Week of month = " + cal.get(Calendar.WEEK_OF_MONTH));       System.out.println("Week of year = " + cal.get(Calendar.WEEK_OF_YEAR));       // time information       System.out.println("
Time Information..........");       System.out.println("Hour (24 hour format) : " + cal.get(Calendar.HOUR_OF_DAY));       System.out.println("Hour (12 hour format) : " + cal.get(Calendar.HOUR));       System.out.println("Minute : " + cal.get(Calendar.MINUTE));       System.out.println("Second : " + cal.get(Calendar.SECOND));       System.out.println("Millisecond : " + cal.get(Calendar.MILLISECOND));    } }

输出

Mon Nov 19 14:28:46 UTC 2018

Date Information..........
Year = 2018
Month = 11
Date = 19
Week of month = 4
Week of year = 47

Time Information..........
Hour (24 hour format) : 14
Hour (12 hour format) : 2
Minute : 28
Second : 46
Millisecond : 464

更新于: 6 月 27 日,2020 年

1 千次浏览

点亮你的职业生涯

获得认证通过完成课程

开始
广告