Java获取当前时间30天之前的时间
//方法一
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); String maxDateStr = "2018-01-01"; String minDateStr = ""; Calendar calc =Calendar.getInstance(); try { calc.setTime(sdf.parse(maxDateStr)); calc.add(calc.DATE, -30); Date minDate = calc.getTime(); minDateStr = sdf.format(minDate); System.out.println("minDateStr:"+minDateStr); } catch (ParseException e1) { e1.printStackTrace(); }
方法二:
Calendar now = Calendar.getInstance(); now.add(Calendar.DAY_OF_MONTH, -30); String endDate = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(now.getTime()); System.out.println(endDate);
方法三:
//java8 新特性
LocalDateTime now = LocalDateTime.now(); now = now.minus(30, ChronoUnit.DAYS); System.out.println(now.toString());
方法四:
import org.apache.commons.lang3.time.DateUtils; Date now = new Date(); Date startDate = DateUtils.addDays(now, -30);
方法五:
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); Calendar c = Calendar.getInstance(); //过去七天 c.setTime(new Date()); c.add(Calendar.DATE, - 7); Date d = c.getTime(); String day = format.format(d); System.out.println("过去七天:"+day); //过去一月 c.setTime(new Date()); c.add(Calendar.MONTH, -1); Date m = c.getTime(); String mon = format.format(m); System.out.println("过去一个月:"+mon); //过去三个月 c.setTime(new Date()); c.add(Calendar.MONTH, -3); Date m3 = c.getTime(); String mon3 = format.format(m3); System.out.println("过去三个月:"+mon3); //过去一年 c.setTime(new Date()); c.add(Calendar.YEAR, -1); Date y = c.getTime(); String year = format.format(y); System.out.println("过去一年:"+year);