java计算时间差
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得到两个时间,希望您能给出最简洁的方法计算出几时几分几秒?
现在是2004-03-26 13:31:40过去是:2004-01-02 11:30:24
要获得两个日期差,差的形式为:XX天XX小时XX分XX秒
方法一:
DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
try
Date d1 = df.parse("2004-03-26 13:31:40");
Date d2 = df.parse("2004-01-02 11:30:24");
long diff = d1.getTime() - d2.getTime();
long days = diff / (1000 * 60 * 60 * 24);
catch (Exception e)
方法二:
SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
java.util.Date now = df.parse("2004-03-26 13:31:40");
java.util.Date date=df.parse("2004-01-02 11:30:24");
long l=now.getTime()-date.getTime();
long day=l/(24*60*60*1000);
long hour=(l/(60*60*1000)-day*24);
long min=((l/(60*1000))-day*24*60-hour*60);
long s=(l/1000-day*24*60*60-hour*60*60-min*60);
System.out.println(""+day+"天"+hour+"小时"+min+"分"+s+"秒");
方法三:
SimpleDateFormat dfs = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
java.util.Date begin=dfs.parse("2004-01-02 11:30:24");
java.util.Date end = dfs.parse("2004-03-26 13:31:40");
long between=(end.getTime()-begin.getTime())/1000;//除以1000是为了转换成秒
long day1=between/(24*3600);
long hour1=between%(24*3600)/3600;
long minute1=between%3600/60;
long second1=between%60/60;
System.out.println(""+day1+"天"+hour1+"小时"+minute1+"分"+second1+"秒");
====================================================
java 比较时间大小
String s1="2008-01-25 09:12:09";
String s2="2008-01-29 09:12:11";
java.text.DateFormat df=new java.text.SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
java.util.Calendar c1=java.util.Calendar.getInstance();
java.util.Calendar c2=java.util.Calendar.getInstance();
try
c1.setTime(df.parse(s1));
c2.setTime(df.parse(s2));
catch(java.text.ParseException e)
System.err.println("格式不正确");
int result=c1.compareTo(c2);
if(result==0)
System.out.println("c1相等c2");
else if(result<0)
System.out.println("c1小于c2");
else
System.out.println("c1大于c2"); 参考技术A
现在是2004-03-26 13:31:40
过去是:2004-01-02 11:30:24
要获得两个日期差,差的形式为:XX天XX小时XX分XX秒
方法一:
DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
try
Date d1 = df.parse("2004-03-26 13:31:40");
Date d2 = df.parse("2004-01-02 11:30:24");
long diff = d1.getTime() - d2.getTime();
long days = diff / (1000 * 60 * 60 * 24);
catch (Exception e)
方法二:
SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
java.util.Date now = df.parse("2004-03-26 13:31:40");
java.util.Date date=df.parse("2004-01-02 11:30:24");
long l=now.getTime()-date.getTime();
long day=l/(24*60*60*1000);
long hour=(l/(60*60*1000)-day*24);
long min=((l/(60*1000))-day*24*60-hour*60);
long s=(l/1000-day*24*60*60-hour*60*60-min*60);
System.out.println(""+day+"天"+hour+"小时"+min+"分"+s+"秒");
方法三:
SimpleDateFormat dfs = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
java.util.Date begin=dfs.parse("2004-01-02 11:30:24");
java.util.Date end = dfs.parse("2004-03-26 13:31:40");
long between=(end.getTime()-begin.getTime())/1000;//除以1000是为了转换成秒
long day1=between/(24*3600);
long hour1=between%(24*3600)/3600;
long minute1=between%3600/60;
long second1=between%60/60;
System.out.println(""+day1+"天"+hour1+"小时"+minute1+"分"+second1+"秒");
参考技术B
比如:现在是2004-03-26 13:31:40
过去是:2004-01-02 11:30:24
我现在要获得两个日期差,差的形式为:XX天XX小时XX分XX秒
方法一:
DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
try Date d1 = df.parse("2004-03-26 13:31:40");
Date d2 = df.parse("2004-01-02 11:30:24");
long diff = d1.getTime() - d2.getTime();
long days = diff / (1000 * 60 * 60 * 24)
catch (Exception e)
方法二:
SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
java.util.Date now = df.parse("2004-03-26 13:31:40");
java.util.Date date=df.parse("2004-01-02 11:30:24");
long l=now.getTime()-date.getTime();
long day=l/(24*60*60*1000);
long hour=(l/(60*60*1000)-day*24);
long min=((l/(60*1000))-day*24*60-hour*60);
long s=(l/1000-day*24*60*60-hour*60*60-min*60);
System.out.println(""+day+"天"+hour+"小时"+min+"分"+s+"秒");
方法三:
SimpleDateFormat dfs = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
java.util.Date begin=dfs.parse("2004-01-02 11:30:24");
java.util.Date end = dfs.parse("2004-03-26 13:31:40");
long between=(end.getTime()-begin.getTime())/1000;//除以1000是为了转换成秒
long day1=between/(24*3600);
long hour1=between%(24*3600)/3600;
long minute1=between%3600/60;
long second1=between%60/60;
System.out.println(""+day1+"天"+hour1+"小时"+minute1+"分"+second1+"秒");
====================================================
java 比较时间大小
String s1="2008-01-25 09:12:09";
String s2="2008-01-29 09:12:11";
java.text.DateFormat df=new java.text.SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
java.util.Calendar c1=java.util.Calendar.getInstance();
java.util.Calendar c2=java.util.Calendar.getInstance();
tryc1.setTime(df.parse(s1));c2.setTime(df.parse(s2));catch(java.text.ParseException e)
System.err.println("格式不正确");
int result=c1.compareTo(c2);
if(result==0)
System.out.println("c1相等c2");
else if(result<0)
System.out.println("c1小于c2");
else
参考技术C public static String diff(String strDate, String pattern)String ret = "";
try
Date now = new Date();
SimpleDateFormat sdf = new SimpleDateFormat(pattern);
Date tmp = sdf.parse(strDate);
if(tmp.after(now))
return "时间超过当前时间";
long s = (now.getTime() - tmp.getTime()) / 1000;
long count = 0;
if((count = s / (3600 * 24 * 365)) > 0)
ret = count + "年前";
else if((count = s / (3600 * 24 * 30)) > 0)
ret = count + "月前";
else if((count = s / 3600 * 24) > 0)
ret = count + "天前";
else if((count = s / 3600) > 0)
ret = count + "小时前";
else if((count = s / 60) > 0)
ret = count + "分钟前";
else
ret = "刚刚";
catch (Exception e)
return ret;
以上算法月份是按30天来算,年以365天来算的。
用java怎么计算两个日期之间年数,季度数,月数
参考技术A 这些是确定的数值? 不考虑闰年什么的?java.util.Date有方法, getTime(),得到毫秒差,,,,,那两个时间的毫秒差的结果,再换算成相应的年或季或月
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