跪求：JAVA如何计算机出今天为今年的第几周？（高分求答）

Question

RT

Answer 1

Calendar calendar=Calendar.getInstance();
int weekOfYear=calender.get(Calendar.WEEK_OF_YEAR);

Answer 2

Calendar calendar=Calendar.getInstance();
int weekOfYear=calender.get(Calendar.WEEK_OF_YEAR);确实就是这样

Answer 3

import java.text.*;
import java.util.Date;
class JavaData4{

public static void main(String []args){
Date d=new Date();
SimpleDateFormat sd=new SimpleDateFormat("w");
System.out.println(sd.format(d));
}
}
这样行不行啊??

Answer 4

执行：
Calendar now=Calendar.getInstance();
System.out.println(now);
可以看到：
id="Asia/Shanghai",offset=28800000,dstSavings=0,useDaylight=false,transitions=19,lastRule=null],firstDayOfWeek=1,minimalDaysInFirstWeek=1,ERA=1,
YEAR=2005,
MONTH=5,
MINUTE=28,SECOND=25,MILLISECOND=656,
WEEK_OF_YEAR=27,
WEEK_OF_MONTH=5,
DAY_OF_MONTH=29,
DAY_OF_YEAR=180,
DAY_OF_WEEK=4,
DAY_OF_WEEK_IN_MONTH=5,AM_PM=1,HOUR=0,HOUR_OF_DAY=12,
ZONE_OFFSET=28800000,DST_OFFSET=0
主要数据分析如下：
日期
DATE, DAY_OF_MONTH, DAY_OF_WEEK, DAY_OF_YEAR
时间
HOUR_OF_DAY, MINUTE, MILLISECOND, SECOND
周
WEEK_OF_MONTH, WEEK_OF_YEAR
年
YEAR
以上这些字段都可以通过Calendar的get()方法进行访问，结果返回一个整数。例如：
Calendar calendar=Calendar.getInstance();
int weekOfYear=calender.get(Calendar.WEEK_OF_YEAR);