Question

java给予一个时间计算是当年第多少周

Answer 1

import java.util.Calendar;
import java.util.Date;

public class TestDate
{

public static void main(String[] args)
{
// TODO Auto-generated method stub
Calendar cal=Calendar.getInstance();
cal.setTime(new Date());
int i = cal.get(Calendar.WEEK_OF_YEAR);
System.out.println(i);
}

}

Answer 2

 /**
  * 产生周序列,即得到当前时间所在的年度是第几周
  * 
  * @return
  */
 public static String getSeqWeek() {
  Calendar c = Calendar.getInstance(Locale.CHINA);
  String week = Integer.toString(c.get(Calendar.WEEK_OF_YEAR));
  if (week.length() == 1)
   week = "0" + week;
  String year = Integer.toString(c.get(Calendar.YEAR));
  return year + week;
 }