Java Calendar获取年、月、日、时间 Calendar c = Calendar.getInstance(TimeZone.getTimeZone("GMT+08:00")); //获取东八区时间 int year = c.get(Calendar.YEAR); //获取年 int month = c.get(Calendar.MONTH) + 1; //获取月份,0表示1月份 int day = c.get(Calendar.DAY_OF_MONTH); //获取当前天数 int first = c.getActualMinimum(c.DAY_OF_MONTH); //获取本月最小天数 int last = c.getActualMaximum(c.DAY_OF_MONTH); //获取本月最大天数 int time = c.get(Calendar.HOUR_OF_DAY); //获取当前小时 int min = c.get(Calendar.MINUTE); //获取当前分钟 int xx = c.get(Calendar.SECOND); //获取当前秒 SimpleDateFormat s=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); String curDate = s.format(c.getTime()); //当前日期 System.out.println("当前时间:"+year + "-" + month + "-"+ day + " "+time + ":" + min +":" + xx); System.out.println("第一天和最后天:" + first +"," + last); System.out.println("当前日期curDate====:" + curDate); 输出结果: 当前时间:2012-9-25 22:50:54 第一天和最后天:1,30 当前日期curDate:2012-09-25 22:50:54 Calendar的计算 c.add(Calendar.YEAR, 1); c.add(Calendar.MONTH, 1); c.add(Calendar.DAY_OF_MONTH, 1); int year2 = c.get(Calendar.YEAR); int month2 = c.get(Calendar.MONTH) + 1; int day2 = c.get(Calendar.DAY_OF_MONTH); int firstD = c.getActualMinimum(c.DAY_OF_MONTH); int lastD = c.getActualMaximum(c.DAY_OF_MONTH); System.out.println("当前时间:"+year2 + "-" + month2 + "-"+ day2 + " "+time + ":" + min +":" + xx); System.out.println("第一天和最后天:" + firstD +"," + lastD); 输出结果: 当前时间:2013-10-26 23:4:3 第一天和最后天:1,31 获取上个月的年、月、日 Calendar c=Calendar.getInstance(); c.add(Calendar.MONTH, -1);//上个月 SimpleDateFormat s=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); String year=String.valueOf(c.get(Calendar.YEAR)); String topDay = String.valueOf(c.getActualMinimum(Calendar.DAY_OF_MONTH)); String lastDay = String.valueOf(c.getActualMaximum(Calendar.DAY_OF_MONTH)); //上个月 String lastMonth=String.valueOf(c.get(Calendar.MONTH)+1).length()==2?String.valueOf(c.get(Calendar.MONTH)+1):"0"+String.valueOf(c.get(Calendar.MONTH)+1); String topDayMonth=year+"-"+lastMonth+"-"+"01" + " 00:00:00"; String lastDayMonth = year+"-"+lastMonth+"-"+lastDay+ " 23:59:59"; System.out.println("###year:" + year); System.out.println("###last month:" + lastMonth); System.out.println("###topday:" + topDayMonth); System.out.println("###lastday:" + lastDayMonth); 输出结果 ###year:2013 ###last month:04 ###topday:2013-04-01 00:00:00 ###lastday:2013-04-30 23:59:59 转自 http://hi.baidu.com/zzm_2007/item/3b967b1cd1586e4e2b3e2258 本文来源:https://www.wddqw.com/doc/b4c7ff7af31dc281e53a580216fc700abb685218.html