年と週
1607 ワード
import java.util.Calendar;
import java.util.Date;
import java.util.TimeZone;
public class DateUtil {
/* , */
public static String getWeekGap(int year, int weekNum) {
Calendar c = Calendar.getInstance();
c.set(year, 0, 01); //
int weekDay = c.get(Calendar.DAY_OF_WEEK) == 1 ? 8 : c
.get(Calendar.DAY_OF_WEEK);
c.add(Calendar.DATE, 7 * weekNum);
c.add(Calendar.DATE, Calendar.MONDAY - weekDay);
Date start = c.getTime();
c.add(Calendar.DATE, 6);
Date end = c.getTime();
String datestr = String.format("%1$tY-%1$tm-%1$td", start) + " "
+ String.format("%1$tY-%1$tm-%1$td", end);
return datestr;
}
/* */
public static String getWeekGap_Default() {
Calendar c = Calendar.getInstance();
c.getTime();
int weekDay = c.get(Calendar.DAY_OF_WEEK) == 1 ? 8 : c
.get(Calendar.DAY_OF_WEEK);
c.add(Calendar.DATE, Calendar.MONDAY - weekDay);
Date start = c.getTime();
c.add(Calendar.DATE, 6);
Date end = c.getTime();
String datestr = String.format("%1$tY-%1$tm-%1$td", start) + " "
+ String.format("%1$tY-%1$tm-%1$td", end);
return datestr;
}
/* */
public static int getWeekNumOfYear(){
TimeZone zone=TimeZone.getTimeZone("Asia/Shanghai");
Calendar cal = Calendar.getInstance(zone);
int c = cal.get(Calendar.WEEK_OF_YEAR);
System.out.println(c);
return c-1;
}
public static int getYear(){
Calendar ca = Calendar.getInstance();
ca.setTime(new java.util.Date());
return ca.get(Calendar.YEAR);
}
}