java计算父亲节

java计算父亲节

import java.text.SimpleDateFormat;
import java.util.Calendar;

public class TestCalender
{

public static void main(String[] args)
{
Calendar now = Calendar.getInstance();
int year = now.get(Calendar.YEAR);
for(int i=2000;i{
System.out.println(getDate(i,6,3,0));
}
}

public static String getDate(int year,int month,int weekOfmonth,int dayofweek)
{
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
Calendar c = Calendar.getInstance();
//得到当年当月1号的日子
c.set(year, month-1, 1);
//得出当年当月1号是星期几（日，一，二，三，四，五，六）
//周日是1
int weekday = c.get(Calendar.DAY_OF_WEEK);
//计算该月总天数
int countDay = 0;
if(weekday==1)
{
countDay = (weekOfmonth-1)*7 + dayofweek+1;
}
else
{
countDay = (weekOfmonth-1)*7 + 7-weekday+1 + dayofweek+1;
}
c.set(Calendar.DAY_OF_MONTH, countDay);
String dateStr = sdf.format(c.getTime());
return dateStr;
}
}