Java获取上周一周末和上月初月末

日期操作工具

最新推荐文章于 2024-07-03 16:30:12 发布

原创最新推荐文章于 2024-07-03 16:30:12 发布 · 2.9k 阅读

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#JAVA

本文提供了一组实用的方法来获取特定的日期，例如上周一、上周日、上个月的第一天和最后一天。通过这些方法，可以方便地进行日期范围的确定，适用于报表统计、日志归档等场景。

package pub;

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

import org.apache.commons.lang.time.DateUtils;

public class GetDate {

// 获取上周一
public String getLastWeekMonday(Date date) {
Date a = DateUtils.addDays(date, -1);
Calendar cal = Calendar.getInstance();
cal.setTime(a);
cal.add(Calendar.WEEK_OF_YEAR, -1);// 一周
cal.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);
SimpleDateFormat df = new SimpleDateFormat("yyyy/MM/dd");
System.out.println("上周一" + df.format(cal.getTime()));
return df.format(cal.getTime());
}

// 获取上周日
public String getLastWeekSunday(Date date) {
Date a = DateUtils.addDays(date, -1);
Calendar cal = Calendar.getInstance();
cal.setTime(a);
cal.set(Calendar.DAY_OF_WEEK, 1);
SimpleDateFormat df = new SimpleDateFormat("yyyy/MM/dd");
System.out.println("上周日" + df.format(cal.getTime()));
return df.format(cal.getTime());
}

// 获取上月第一天
public static String getLastMonthDayOne(Date date) {
Calendar calendar1 = Calendar.getInstance();
calendar1.add(Calendar.MONTH, -1);
calendar1.set(Calendar.DAY_OF_MONTH, 1);
SimpleDateFormat sdf = new SimpleDateFormat("yyyy/MM/dd");
System.out.println("上月初：" + sdf.format(calendar1.getTime()));
return sdf.format(calendar1.getTime());
}

// 获取上月最后一天
public static String getLastMonthLastDay(Date date) {
Calendar calendar2 = Calendar.getInstance();
calendar2.set(Calendar.DAY_OF_MONTH, 0);
SimpleDateFormat sdf = new SimpleDateFormat("yyyy/MM/dd");
System.out.println("上月末：" + sdf.format(calendar2.getTime()));
return sdf.format(calendar2.getTime());
}

public static void main(String[] args) {

/*Date date = new Date();
getLastMonthDayOne(date);
getLastMonthLastDay(date);*/
}
}