calendar中获得日期的年月日

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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

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