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Java Data Type Q&A » Date Time » time 1 

1. Elapsed time without considering weekends and bank holidays in Java    stackoverflow.com

I've implemented a stopwatch that works fine without considering that bank holidays and weekends shouldn't be counted in the total duration. I was looking for some open-source library where I could ...

2. Get the time of tomorrow xx:xx    stackoverflow.com

what is an efficient way to get a certain time for the next day in Java? Let's say I want the long for tomorrow 03:30:00. Setting Calendar fields and Date formatting are obvious. Better ...

3. Java: getMinutes and getHours    stackoverflow.com

How do you get Hours and Minutes since Date.getHours and Date.getMinutes got deprecated? Note: The examples that I found in google search used the deprecated methods. Thank you.

4. Compile date and time    stackoverflow.com

Is there a Java equivalent to the C & C++ compile-time constants __DATE__ and __TIME__. I need to print compile time and version info of the program being compiled. Thanks kodev19

5. How to set time on a Date object to be zero (00/00/00)    stackoverflow.com

Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(0);
This sets it to the deafult value. How do I set it to zero?

6. Retrieve time portion of date    stackoverflow.com

How can I retrieve the time portion of a date?

Date date = new Date();
SimpleDateFormat dateFormat = new SimpleDateFormat("HH:mm:ss");
System.out.println(dateFormat(date));

7. Java GregorianCalendar What am I doing wrong? Wrong date?    stackoverflow.com

Hello I have a problem with GregorianCalendar. What is wrong in there? How outcome is 2010/6/1 and not 2010/05/31?

package test;

import java.util.Calendar;
import java.util.GregorianCalendar;

public class Main {

    public static void main(String[] args) ...

8. Time within a particular time interval    stackoverflow.com

i'm trying to solve a seemingly simple problem, but just can't quite get my mind around it. i have two times startTime and stopTime, which can be considered to be in the ...

9. What's the most efficient way to strip out the time from a Java Date object?    stackoverflow.com

What's the most efficient way to remove the time portion from a Java date object using only Classes from within the JDK? I have the following

myObject.getDate() = {java.util.Date}"Wed May ...

10. Java - Execute method on specific date    stackoverflow.com

I need to execute a method on a specific date of every year, how could I do this in java? Thanks, Chris.

11. How to get system time in Java without creating a new Date    stackoverflow.com

I need to get the system date, and Java provides the "new Date().getTime()". But I need to avoid new object allocation (I'm working on a embedded system). How can I get the ...

12. Storing simple hour/minute information in Java - best practice question    stackoverflow.com

I've been looking at different methods to store time in Java and I can't quite find the right implementation for my needs. I want to store information about our courses schedule, this ...

13. Java, getting Date without time    stackoverflow.com

Continuing from this discussion: java program to get the current date without timestamp What is the most efficient way to get a Date object without the time? Is there any other ...

14. How to set time to a date object in java    stackoverflow.com

I created a date object in java . When i do S.o.p ; it shows something like: date=Tue Aug 09 00:00:00 IST 2011. As a result of it, my excel file ...

15. What's the best way to represent a time period in Java?    stackoverflow.com

What's the best way to represent a time period in Java? May I use 2 Date objects or is there a better way? I.e. all April, the hole 3rd week of July, ...

16. How can I tell if a date is before a certain time in Java?    stackoverflow.com

For example given a java.util.Date how could I test if the time was before 12.30 PM that day?

17. Java Date gives wrong time    stackoverflow.com

Is there any problem with java Date() class it always gives me wrong time for example if my system time is 11 it gives me 12 (it always adds one hour ...

18. Java Time between Date and Now    stackoverflow.com

I need help writing a function in Java that takes an input date and tells me the number of years, months, and days since the date. For example, "July 1, 2005" would ...

19. How to set the minimum or maximum time value of a java.util.Date?    stackoverflow.com

I'd like set a java.util.Date-Objekt to its minimum or maximum time values for a Date (one day). The way I do it currently (for minimum):

Calendar cal = Calendar.getInstance();
cal.setTime(aDate);
cal.set(Calendar.HOUR, 0);
//... same for minutes, ...

20. What is the proper way to remove the time part from java.util.Date?    stackoverflow.com

I want to implement a thread-safe function to remove the time part from java.util.Date. I tried this way

private static final DateFormat df = new SimpleDateFormat("yyyy-MM-dd");
public static Date removeTimeFromDate(Date date) {
   ...

21. How to determine the time between now and an arbitrary future date in Java    stackoverflow.com

I'm currently trying to determine the amount of time between two dates (one of which is the present date/time, the other an arbitrary future date). I'm using native Java and the ...

22. Having a syntax error in INSERT statement on the date and time    bytes.com

carecare86 These are the codes. I cant see any error there. Please kindly help. Thanks. void saveMedicalRecords() { try { Class.forName(driver); Connection connection = DriverManager.getConnection(url2, username, password); Statement statement = connection.createStatement(); ...

26. how to substract time and date    coderanch.com

27. How to get System Date and time    coderanch.com

28. Date & time operation    coderanch.com

29. Date and Time    coderanch.com

Most databases support a datetime or timestamp datatype directly. If this is an option, avoid using strings as they cannot be ordered easily (unless you choose a workable format). JDBC supports DATE, TIME, and TIMESTAMP. If your value represents a point in time, don't split it up. Of course, you'll always be able to find a case where separating them is ...

30. Representing times (was: Date and time in Java )    coderanch.com

Every now and then similar questions pop up. Dates and times seem such a popular subject. I wonder which types to use to represent the date and time in my javabean. Together they form a timestamp, however the date is part of my business key and the time is not, therefore I wanted to separate them. Currently both are represented by ...

31. precise date and time    coderanch.com

33. Date and time componet    coderanch.com

I have an int that represents both date and time combined in secs. I need to separate this to 2 ints one int having just the date no time and 2nd int having just the time no date. Also Do I need to convert it to gregorian calender first. Thanks for the help

34. Date function after Mar-11-2007 time change    coderanch.com

Hi, In a servlet , I use a function request.getsession().getLastAccessed to get the last accesses time and then add 30 minutes to it to some functionality . After March 12 , customers are complaining that this is NOT working .i.e the functionality is lagging behind an hour. So in my JSP when i print now a simple variable , new Date() ...

35. Working with Date and Time    coderanch.com

Hi, I've written the following code to calculate the elapsed time since birth. But on running it, the month and year are not getting displayed correctly. I'm getting a negative value for the month and also the elapsed year is wrong. Please help me... import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.util.GregorianCalendar; import java.util.Date; public class ElapsedTime { public static void ...

36. Get the correct time from Date object    coderanch.com

Hi, I am working with Quartz Job Scheduler and get a Date object returned when rescheduling a Job. I want to show the exact time of this Date object, but it seems that something is going wrong. When I print out the time I got a totally wrong time: Mon Dec 12 14:43:40 CET 2005 Below you see the code I ...

37. Date & Time in java    coderanch.com

38. how to substract time and date    coderanch.com

39. Time without date. Help!    coderanch.com

I am writing a servlet which takes a value for a particular time from a database. This time is in the form of msec since epoch. What I want to do is convert this to the time of day for display in an html document. I have managed to return the full date/time value in html (i.e. including day, date, year, ...

40. how to split date and time?    coderanch.com

41. how to obtain system date and time?    coderanch.com

42. Subtracting Date and Time    coderanch.com

Use the getTime() method of Date to get 'long' representations of your dates (which is the number of milliseconds since the Jan. 1, 1970). Then get the difference of these two numbers. This will be the number of milliseconds difference between your two dates. Divide the result by 1000, and you have the number of seconds between your dates....and so forth. ...

43. How to get System Date and time    coderanch.com

44. Date and Time    coderanch.com

Yeah, sort of. I need to enter the date and time into a database. So i need to be able to return the date and time in a specific format i.e. if the date and time was July 10th 2002 9:45 i would need the: date : 2002-07-10 time : 09:45:00 the api isn't very clear on how to achieve this. ...

45. date and time    coderanch.com

47. Dealing with dates and Zulu time...    coderanch.com

I am getting from a source that has no support. In fact, I have no one to ask. I am assuming this is zulu time related. This is what the data looks like. These are timestamps... Timestamp 1: 20040304002300Z-0500 Timestamp 2: 20040505055900Z+0800 I translate Timestmp #1 to mean 03/04/2004 00:23:00 I translate Timestmp #1 to mean 05/05/2004 05:59:00 Would the -0500 ...

48. today's date & time    coderanch.com

Hello I'm using this to get today's dat and time Date now = Calendar.getInstance().getTime(); which returns this 'Tue May 17 15:39:01 BST 2005' I'm bringing a date back from a db table and need to compare the difference between the 2 dates. Firstly i need to make sure the date is the same Secondly i need to see if the java ...

49. cant print Date or time    coderanch.com

Hi all I am having a problem on my coursework it has been asked to print the details of a job to the Terminal Window, but in doing so I get this output. refNo = 20102 Staff Name = Micky Mouse Number of Pages = 12 Number of copies = 1 Double sided = true Submitted Date = 01/01/2000 Cost = ...

50. Date & Time    coderanch.com

51. Extract date parts from time stamp    coderanch.com

52. Date & Time Problem    coderanch.com

Hi to all, I'm having a buring problem Following code snippet i got from here, I use to explain my problem. 1. Date d = new Date(); 2. System.out.println(d); 3. Calendar cal = new GregorianCalendar(); 4. cal.setTime(d); 5. cal.roll(Calendar.HOUR_OF_DAY, -1); // problem is here 6. d = cal.getTime(); 7. System.out.println(d); lets say, in line no 2 printed as "Wed Feb 21 ...

53. Checking for Date Time    coderanch.com

Originally posted by Santhosh Jali: I am writing a batch program. The batch program has a check as below how do I write it, any suggestions ? Check the current system time falls between Saturday 1.00 AM and Sunday 1.00 PM. Create a Calendar() object. Then use it's get() method to see if (DAY_OF_WEEK is Saturday and HOUR_OF_DAY >= 1) or ...

54. Date and Time    coderanch.com

Great. thanks amigo[friend in latin] i got the formula to convert the milliseconds to days. the program also working correct and it gives me some idea. now tell me if i try to convert those days into years then what will happen? we have to check the condition for the leap year also?

55. Time and Date class    coderanch.com

How can we pass a specific time as a parameter to a method ? For instance if I have to set time to this : "00:00:00.0000000-05:00" Time wishTime = new Time() ; wishTime.setTime(long lg) ; I can't use 00:00:00.0000000-05:00 in setting time as it is expecting long. Is there a way of doing that ? I have a similar question for ...

56. java.util.Date - after function not considering time?    coderanch.com

Hi All, I am working on a Java application which retrieves two dates (of type datetime) from database table. e.g. 2009-05-13 11:11:03.113 and 2009-05-13 11:11:03.257 I am saving these into two variables date1 and date2 of type java.util.Date. i.e. date1 --> 2009-05-13 11:11:03.113 date2 --> 2009-05-13 11:11:03.257 As seen these two dates are equal but there is difference in time : ...

57. Date and Time manipulation    coderanch.com

Hi, For our applicatio i have to develop one which has to show remaining time from today. To reach this kind of requirement , I am calculating the end date from give data. and I am calculating seconds difference and again making that into days and hours, To implement this functionality coding part is becoming more . So please tell me ...

59. Java time & date API    coderanch.com

60. how do get particular date of total time    coderanch.com

this is our java code private static PreparedStatement preparedStatement; private static ResultSet rs; public static void main(String[] args) throws NamingException, SQLException { int objectId; int clientId; DateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); // String gpstime = null; PreparedStatement preparedStatement = null; Connection conn=null; long mill; long diffSeconds=0; long diffMinutes=0; try { Class.forName("com.mysql.jdbc.Driver"); Connection conn1=DriverManager.getConnection("jdbc:mysql://108.108.8.4:3306/navl?","root", "ajmani@%"); preparedStatement = conn1.prepareStatement( "select gpstime from ...

61. Remove time part from java.util.Date()    coderanch.com

Hi, I want to get only the date part of java.util.Date() resetting time to 00. Let me make it more clear. When I am initializing the date object as java.util.Date date = new java.util.Date(); I am getting the date object with value as "Thu May 27 12:13:49 IST 2010" I just want to set the time part of this object to ...

63. Date and Time calculations    coderanch.com

Do you have the date in a java.util.Date object? One thing you should know is that Date objects do not know anything about timezones by themselves. When you convert the Date to a String using a DateFormat object, you can set the TimeZone on the DateFormat object if you want to have it formatted in a certain timezone. For example: Date ...

64. How do I get date and time seperate from Date Object    coderanch.com

Date date = trade.getValueDate(); DateFormat dateFormat = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss"); dateFormat.format(date); //get current date time with Calendar() Calendar cal = Calendar.getInstance(); //logger.debug("Date is " cal.getTime()); logger.debug("Trade Time is " + dateFormat.format(cal.getTime().getTime())); here i want time to be in HH:mm:ss formate 12:53:52 logger.debug("trade Date is" + dateFormat.format(cal.getTime())); Here I want data to be in yyyy/MM/dd format 2011/11/16 Thanks Ajoo

65. Time and Date    java-forums.org

66. [SOLVED] time and date    java-forums.org

Thanks pple for your help. i got it finally and i can display date and time in my program GUI But another problem came up, my time is not updating and i want it synchronised with ths system clock such that the hours and minutes update as long as the program is running. how can i do this? any ideas?

67. get date, time from jSpinner    java-forums.org

import java.awt.*; import java.text.*; import java.util.*; import javax.swing.*; import javax.swing.event.*; public class Test { public static void main(String[] args) { SpinnerDateModel model = new SpinnerDateModel(new Date(), null, null, Calendar.DAY_OF_MONTH); JSpinner spinner = new JSpinner(model); String format = "dd MMM yyyy"; JSpinner.DateEditor editor = new JSpinner.DateEditor(spinner, format); spinner.setEditor(editor); model.addChangeListener(new ChangeListener() { DateFormat intFormat = new SimpleDateFormat("M"); DateFormat strFormat = new SimpleDateFormat("MMM"); public ...

68. how do get particular date of total time    java-forums.org

Java Code: private static PreparedStatement preparedStatement; private static ResultSet rs; public static void main(String[] args) throws NamingException, SQLException { int objectId; int clientId; DateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); // String gpstime = null; PreparedStatement preparedStatement = null; Connection conn=null; long mill; long diffSeconds=0; long diffMinutes=0; try { Class.forName("com.mysql.jdbc.Driver"); Connection conn1=DriverManager.getConnection("jdbc:mysql://108.108.8.4:3306/navl?","root", "ajmani@%"); preparedStatement = conn1.prepareStatement("select gpstime from xydata a inner join ...

69. Date time picker    java-forums.org

70. Date vs Time    java-forums.org

I am trying to write a scheduling program for my work. The way I was thinking of doing this was creating a class for each employee, availability, and shift and. Each employee would have an object of availability for each day of the week. The availability would store just a time of when they could work. i.e. 10:00 Am - 8:30 ...

71. time limit between purchase of voucher & exam date for SCJP    forums.oracle.com

Hello folks, i plan to give my SCJP 1.5 next week. (But i did not buy the voucher as yet because I was nt sure if i wd be in the US till Sept. ) If i buy the voucher today , what are the chances that i get to schedule my test next Saturday i.e. 8/09/2007 Can somebody plz let ...

72. Date and Time functions in Java    forums.oracle.com

First of all accept my heartiest thanks for the help all of you have provided. As i told earlier, I am new to java, actually i have been programming in Foxpro and VFP, but now I am trying to switch to Java. As i am in habbit of using VFP I look for VFP like features in Java, and I am ...

73. the system time - date    forums.oracle.com

74. How to show time and date using something like {0,date,short}    forums.oracle.com

Hi dear friends! I have another exciting problem... I?m translating my java program from Spanis to Brasilian, so I am using ResourceBundle class ( now it is easy to traslate it) One of my strings is something like "Started: 14:21:05 7/7/2006" ( date and time format is not a problem) Well, in my resource file I have: "somestring=Started: {0,date,short}" And in ...

75. Time and Date in Java    forums.oracle.com

In general time on computers is represented by a long value of milliseconds after some date. This long represents everything - time, date year etc. See System.currentTimeMillis() if you look at the package for Time, you'll see that it's in the java.sql package. What this means is that practically the only time you'll ever see or need to use a Time ...

76. display date and time    forums.oracle.com

77. Getting the Time and Date    forums.oracle.com

Let me get this straight. There is a bunch of information that will help you that has already been written but you don't want to read it. So instead you want me to waste my time in basically repeating stuff that has already been written and more than likely better than I can elucidate because it was written by the very ...

78. How to get System Date and Time?    forums.oracle.com

There are some scenarios (which I don't think includes yours) where Calendar.getInstance() isn't the best way. If you've got various clients hanging off a central database, you might be better off querying the database for the date and time. This eliminates problems arising from the clients not quite being set to the same time

79. how to log date and time in java?    forums.oracle.com

80. Getting Time & Date    forums.oracle.com

82. Display Date Time    forums.oracle.com

83. How can I obtain System date and time?    forums.oracle.com

84. Retrieve time only from a date    forums.oracle.com

I used SimpleDateFormat. Let me explain again what I am trying to do here The dates are in a List 1. I get the dates using getter method (these contain full dates including day, month, time and GMT, UTC whatever) 2. Format them (The result is a string with only time) 3. and set it using setter methods (I try to ...

85. Getting date and time from microsoft date    forums.oracle.com

Hi, sorry for that. I mean microfosoft date when talking about minutes from 01.01.1900. So when i use the parameter / 24 / 60 i got days from 01.01.1900 but no hours because its a long value... And yes i did search the forums but still got no answer... Message was edited by: barnti

86. Time and date    forums.oracle.com

Hia, I know this must have been asked about 345,643 times, but here I am to ask it again. I want to create a application with a status/info bar at the bottom. The bar is no problem, but how do I get the current date and time, and have it updated regularly? I you don't want to answer just direct me ...

87. How to count time between two dates?    forums.oracle.com

88. Date time -- beginner question    forums.oracle.com

89. Set time in today Date to 6 pm    forums.oracle.com

90. Help With Time and Date    forums.oracle.com

Write in Java, a program to collect data of ozone in air. There is a fixed limit (you) may define yourself. The following operations should be supported : 1.Entering data: After each measurement is recorded next to the measured value a Date should be assigned. 2.Removing : Individual subsequently recognized as erroneous readings can be deleted. 3.Listing of all measured values ...

91. Missing Time value in Date    forums.oracle.com

You are right, I should have tried it before replying, But the thing is for a single line of change in code , it takes nearly an hour to re-build the project (and there is no short cut as code builds so many dependent jars). Hope you can understand. Any way I will give it a try.

93. how do get particular date of total time    forums.oracle.com

GPSTime 2010-05-13 20:16:13.0 Time in seconds: 60 seconds. 60 GPSTime 2010-05-13 20:17:10.0 Time in seconds: 57 seconds. 57 GPSTime 2010-05-13 20:18:10.0 Time in seconds: 60 seconds. 60 GPSTime 2010-05-13 20:19:10.0 Time in seconds: 60 seconds. 60 GPSTime 2010-05-13 20:20:10.0 Time in seconds: 60 seconds. 60 GPSTime 2010-05-13 20:21:11.0 Time in seconds: 61 seconds. 61 GPSTime 2010-05-13 20:22:11.0 Time in seconds: 60 ...

95. Save a date & time for another time.    forums.oracle.com

96. Is there a way to get date and time in JAVA without using sysdate and time.    forums.oracle.com

This probably sounds ridiculous, but it's something that could work if the language can provide the means: If you could find a way to attach the program to a shutdown and/or startup sequence for the platform it's on, maybe the date and time won't be a problem. What you could do is have this program of yours create a permanent file ...

97. how to split (year/month/day 00::00::00) into table date and time    forums.oracle.com

realnapster_no1 wrote: first in ms access the field date data type is date and time and I make a connection java with ODBC, then the field date I want to split (year/month/day 00::00::00) into table date and time( (in table date: year/month/day)(in table time: 00::00::00))??? msg: - do not change field in ms access I'm not 100% sure what you are ...

98. Date and time    forums.oracle.com

99. Date and Time Countdown    forums.oracle.com

100. Tracking Of Date Time Without System Date for Trial versions    forums.oracle.com

Hi, how to keep track of the date and time without using the system date as that can easily be changed. Actually i want to know how people counter attack, who tries to change the system date to make run the trial version software's. If we try to change system date backwards.. some software's start working but few will not work. ...

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