SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        Calendar c = Calendar.getInstance();
         
        //過去七天
        c.setTime(new Date());
        c.add(Calendar.DATE, - 7);
        Date d = c.getTime();
        String day = format.format(d);
        System.out.println(
 
"過去七天："+day);
         
        //過去一月
        c.setTime(new Date());
        c.add(Calendar.MONTH, -1);
        Date m = c.getTime();
        String mon = format.format(m);
        System.out.println("過去一個月："+mon);
         
        //過去三個月
        c.setTime(new Date());
        c.add(Calendar.MONTH, 
 
-3);
        Date m3 = c.getTime();
        String mon3 = format.format(m3);
        System.out.println("過去三個月："+mon3);
         
        //過去一年
        c.setTime(new Date());
        c.add(Calendar.YEAR, -1);
        Date y = c.getTime();
        String year = format.format(y);
        System.out.println(
 
"過去一年："+year);

//實例

public void setStartAndEndDate(){

 SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
   Calendar c = Calendar.getInstance();
   String sdate = DateUtils.getDate();
   //過去一月
   c.setTime(new Date());
   c.add(Calendar.MONTH, -1);
   Date m = c.getTime();
   String mon = format.format(m);
   System.out.println("過去一個月："+mon);
   StartDate = DateUtils.parseDate(mon);
   EndDate = DateUtils.parseDate(sdate);
}

思路來源： https://www.cnblogs.com/bunuo/p/6140750.html

java獲取當前時間前一周、前一月、前一年的時間