肯定必须先把这两个时间的格式统一后,采用方法来比较实现!下面是时间比较的js。可以看一看!!<html><head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312"> <meta name="GENERATOR" content="Microsoft FrontPage 4.0"> <meta name="ProgId" content="FrontPage.Editor.Document"> <title>You are from June 21</title> </head><body onLoad="countdown()"> <!-- --><SCRIPT><!--// Script Editor: Howard Chen // Browser Compatible for this script: IE 2.0 or Higher // Netscape 2.0 or Higher // Get more JavaScripts at http://www.geocities.com/SiliconValley/Network/7432/ // Bug report to [email protected] // This script is free as long as you keep its creditsvar theDay = new Date("July 21, 2004") //The day has to be in the format Month Day, Yearvar DayTill //The string that is going to put all numbers together and make sense.function countdown(){var today = new Date() //Create an Date Object that contains today's date.var second = Math.floor((theDay.getTime() - today.getTime())/1000)var minute = Math.floor(second/60) //Devide "second" into 60 to get the minutevar hour = Math.floor(minute/60) //Devide "minute" into 60 to get the hourvar day = Math.floor(hour/24) //Devide "hour" into 60 to get the dayCDay= day //Correct dayCHour= hour % 24 //Correct hour, after devide into 24, the remainder deposits here.CMinute= minute % 60 //Correct minute, after devide into 60, the remainder deposits here.CSecond= second % 60 //Correct second, after devide into 60, the remainder deposits here.DayTill = CDay + " days, " + CHour + " hours, " + CMinute + " minutes and " + CSecond + " seconds "//Rewrite the string to the correct information.document.clock.countdown.value = DayTill //Make the particular form chart become "Daytill"var counter = setTimeout("countdown()", 1000)}//--></SCRIPT><!-- --> <! You must have countdown() here to run the script --><!-- --><FORM NAME = "clock">You are <INPUT TYPE="TEXT" NAME= "countdown" SIZE= "45"> from June 21, 2004.</FORM><!-- --> </body></html>
把2004-6-10 10:10:10 转换成Date,然后用getTime()取得它的毫秒数,就可以比较了。这里有个例子: import java.util.Date; import java.text.SimpleDateFormat; import java.text.ParseException;public class a{ /**将一个表示时间的字符串转换成Date *@param strTime --一个表示时间的字符串 *@return date */ public static Date Convert(String strTime){ String format = "yyyy-MM-dd mm:hh:ss"; Date date = null;
try{ SimpleDateFormat tf = new SimpleDateFormat(format); date = tf.parse(strTime); }catch(NullPointerException e){ System.out.println("the pattern is null."); }catch(IllegalArgumentException ex){ System.out.println("the pattern is invalid."); }catch(ParseException e){ System.out.println("time format error."); }
return date; }
public static void main(String[] args){ String time = "2004-6-10 10:10:10"; Date date = Convert(time); long time1 = date.getTime(); System.out.println(time1); } }
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<meta name="GENERATOR" content="Microsoft FrontPage 4.0">
<meta name="ProgId" content="FrontPage.Editor.Document">
<title>You are from June 21</title>
</head><body onLoad="countdown()">
<!-- --><SCRIPT><!--// Script Editor: Howard Chen
// Browser Compatible for this script: IE 2.0 or Higher
// Netscape 2.0 or Higher
// Get more JavaScripts at http://www.geocities.com/SiliconValley/Network/7432/
// Bug report to [email protected]
// This script is free as long as you keep its creditsvar theDay = new Date("July 21, 2004") //The day has to be in the format Month Day, Yearvar DayTill //The string that is going to put all numbers together and make sense.function countdown(){var today = new Date() //Create an Date Object that contains today's date.var second = Math.floor((theDay.getTime() - today.getTime())/1000)var minute = Math.floor(second/60) //Devide "second" into 60 to get the minutevar hour = Math.floor(minute/60) //Devide "minute" into 60 to get the hourvar day = Math.floor(hour/24) //Devide "hour" into 60 to get the dayCDay= day //Correct dayCHour= hour % 24 //Correct hour, after devide into 24, the remainder deposits here.CMinute= minute % 60 //Correct minute, after devide into 60, the remainder deposits here.CSecond= second % 60 //Correct second, after devide into 60, the remainder deposits here.DayTill = CDay + " days, " + CHour + " hours, " + CMinute + " minutes and " + CSecond + " seconds "//Rewrite the string to the correct information.document.clock.countdown.value = DayTill //Make the particular form chart become "Daytill"var counter = setTimeout("countdown()", 1000)}//--></SCRIPT><!-- --> <! You must have countdown() here to run the script --><!-- --><FORM NAME = "clock">You are <INPUT TYPE="TEXT" NAME= "countdown" SIZE= "45"> from June 21, 2004.</FORM><!-- -->
</body></html>
import java.util.Date;
import java.text.SimpleDateFormat;
import java.text.ParseException;public class a{
/**将一个表示时间的字符串转换成Date
*@param strTime --一个表示时间的字符串
*@return date
*/
public static Date Convert(String strTime){
String format = "yyyy-MM-dd mm:hh:ss";
Date date = null;
try{
SimpleDateFormat tf = new SimpleDateFormat(format);
date = tf.parse(strTime);
}catch(NullPointerException e){
System.out.println("the pattern is null.");
}catch(IllegalArgumentException ex){
System.out.println("the pattern is invalid.");
}catch(ParseException e){
System.out.println("time format error.");
}
return date;
}
public static void main(String[] args){
String time = "2004-6-10 10:10:10";
Date date = Convert(time);
long time1 = date.getTime();
System.out.println(time1);
}
}