Java获取本周一、上周一、下周一时间工具类

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Java获取本周一、上周一、下周一时间工具类

import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;public class DateUtils {private static final SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");/*** 获取给定日期上周一的日期* @param date 给定的日期* @return 上周一的日期*/public static Date getPreviousWeekMonday(Date date) {Calendar cal = Calendar.getInstance();cal.setTime(getThisWeekMonday(date));cal.add(Calendar.DATE, -7);return cal.getTime();}/*** 获取给定日期本周一的日期* @param date 给定的日期* @return 本周一的日期*/public static Date getCurrentWeekMonday(Date date) {Calendar cal = Calendar.getInstance();cal.setTime(date);cal.setFirstDayOfWeek(Calendar.MONDAY);cal.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);return cal.getTime();}/*** 获取给定日期下周星期一的日期* @param date 给定的日期* @return 下周星期一的日期*/public static Date getNextWeekMonday(Date date) {Calendar cal = Calendar.getInstance();cal.setTime(getThisWeekMonday(date));cal.add(Calendar.DATE, 7);return cal.getTime();}// 示例使用方法，开发者可参考此方法了解如何调用上面定义的工具方法public static void exampleUsage(Date date) {try {System.out.println("今天是" + sdf.format(date));System.out.println("上周一" + sdf.format(getPreviousWeekMonday(date)));System.out.println("本周一" + sdf.format(getCurrentWeekMonday(date)));System.out.println("下周一" + sdf.format(getNextWeekMonday(date)));} catch (Exception e) {e.printStackTrace();}}
}