package com.oce.tsm.ui.sim.banKpi.utils;
import java.util.Calendar;
public class WeekUtils {
public static void main(String[] args) {
WeekUtils cd = new WeekUtils();
System.out.println("开始时间: " + cd.getStartDayOfWeekNo(2015,47) );
System.out.println("结束时间:" + cd.getEndDayOfWeekNo(2015,47) );
}
/**
* get first date of given month and year
* @param year
* @param month
* @return
*/
public String getFirstDayOfMonth(int year,int month){
String monthStr = month < 10 ? "0" + month : String.valueOf(month);
return year + "-"+monthStr+"-" +"01";
}
/**
* get the last date of given month and year
* @param year
* @param month
* @return
*/
public String getLastDayOfMonth(int year,int month){
Calendar calendar = Calendar.getInstance();
calendar.set(Calendar.YEAR , year);
calendar.set(Calendar.MONTH , month - 1);
calendar.set(Calendar.DATE , 1);
calendar.add(Calendar.MONTH, 1);
calendar.add(Calendar.DAY_OF_YEAR , -1);
return calendar.get(Calendar.YEAR) + "-" + (calendar.get(Calendar.MONTH) + 1) + "-" +
calendar.get(Calendar.DAY_OF_MONTH);
}
/**
* get Calendar of given year
* @param year
* @return
*/
private Calendar getCalendarFormYear(int year){
Calendar cal = Calendar.getInstance();
cal.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);
cal.set(Calendar.YEAR, year);
return cal;
}
/**
* get start date of given week no of a year
* @param year
* @param weekNo
* @return
*/
public String getStartDayOfWeekNo(int year,int weekNo){
Calendar cal = getCalendarFormYear(year);
cal.set(Calendar.WEEK_OF_YEAR, weekNo);
return cal.get(Calendar.YEAR) + "-" + (cal.get(Calendar.MONTH) + 1) + "-" +
cal.get(Calendar.DAY_OF_MONTH);
}
/**
* get the end day of given week no of a year.
* @param year
* @param weekNo
* @return
*/
public String getEndDayOfWeekNo(int year,int weekNo){
Calendar cal = getCalendarFormYear(year);
cal.set(Calendar.WEEK_OF_YEAR, weekNo);
cal.add(Calendar.DAY_OF_WEEK, 6);
return cal.get(Calendar.YEAR) + "-" + (cal.get(Calendar.MONTH) + 1) + "-" +
cal.get(Calendar.DAY_OF_MONTH);
}
}
