Current time in microseconds

For one of my programs i want to find the current time in microseconds. How do i get this in Java?

The server makes the OS calls that hook into the system processor cycle count,....
Java doesn't directly provide this functionality.Which brings up an interesting question/point (I think).
Since Java provides an sql.TimeStamp class to map to an sql database supporting nanos, how does Java instantiate this class as far as nanos are concerned? Unless the only thing its good for is for READING sql TIMESTAMP values.
My understanding of this is important as it can impact my db design. I would rather have my ejb's create this data in the j2ee server, when doing sql INSERT's, rather than having the db itself do the TIMESTAMP with a trigger (for a variety of reasons, including cache maintenance). But if the nanos are all zero(!)...well, need to use a trigger.
Thanks
-nat

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List "View" with current time in column

Hi.
I know that list view does not support fields calculated on page load. But I have to realize such functionality.
Can someone provide options for realizing this?
"Hack" some internal SQL query, inject JS on a view page, use .NET code somehow?
Using JS seems as the best solution, but how can I do this?
Thanks.

Hi,
According to your post, my understanding is that you wanted to display the current time in colum.
The following code snippet for your reference.
<script src="http://code.jquery.com/jquery-1.10.2.min.js" type="text/javascript"></script>
<script type="text/javascript">
function date(format, timestamp) {
var that = this,
jsdate, f, formatChr = /\\?([a-z])/gi,
formatChrCb,
// Keep this here (works, but for code commented-out
// below for file size reasons)
//, tal= [],
_pad = function(n, c) {
n = n.toString();
return n.length < c ? _pad('0' + n, c, '0') : n;
txt_words = ["Sun", "Mon", "Tues", "Wednes", "Thurs", "Fri", "Satur", "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"];
formatChrCb = function(t, s) {
return f[t] ? f[t]() : s;
f = {
// Day
d: function() { // Day of month w/leading 0; 01..31
return _pad(f.j(), 2);
D: function() { // Shorthand day name; Mon...Sun
return f.l().slice(0, 3);
j: function() { // Day of month; 1..31
return jsdate.getDate();
l: function() { // Full day name; Monday...Sunday
return txt_words[f.w()] + 'day';
N: function() { // ISO-8601 day of week; 1[Mon]..7[Sun]
return f.w() || 7;
S: function() { // Ordinal suffix for day of month; st, nd, rd, th
var j = f.j();
if (j < 4 || j > 20) {
return (['st', 'nd', 'rd'])[j % 10 - 1];
else {
return 'th';
w: function() { // Day of week; 0[Sun]..6[Sat]
return jsdate.getDay();
z: function() { // Day of year; 0..365
var a = new Date(f.Y(), f.n() - 1, f.j()),
b = new Date(f.Y(), 0, 1);
return Math.round((a - b) / 864e5);
// Week
W: function() { // ISO-8601 week number
var a = new Date(f.Y(), f.n() - 1, f.j() - f.N() + 3),
b = new Date(a.getFullYear(), 0, 4);
return _pad(1 + Math.round((a - b) / 864e5 / 7), 2);
// Month
F: function() { // Full month name; January...December
return txt_words[6 + f.n()];
m: function() { // Month w/leading 0; 01...12
return _pad(f.n(), 2);
M: function() { // Shorthand month name; Jan...Dec
return f.F().slice(0, 3);
n: function() { // Month; 1...12
return jsdate.getMonth() + 1;
t: function() { // Days in month; 28...31
return (new Date(f.Y(), f.n(), 0)).getDate();
// Year
L: function() { // Is leap year?; 0 or 1
var j = f.Y();
return j % 4 === 0 & j % 100 !== 0 | j % 400 === 0;
o: function() { // ISO-8601 year
var n = f.n(),
W = f.W(),
Y = f.Y();
return Y + (n === 12 && W < 9 ? 1 : n === 1 && W > 9 ? -1 : 0);
Y: function() { // Full year; e.g. 1980...2010
return jsdate.getFullYear();
y: function() { // Last two digits of year; 00...99
return f.Y().toString().slice(-2);
// Time
a: function() { // am or pm
return jsdate.getHours() > 11 ? "pm" : "am";
A: function() { // AM or PM
return f.a().toUpperCase();
B: function() { // Swatch Internet time; 000..999
var H = jsdate.getUTCHours() * 36e2,
// Hours
i = jsdate.getUTCMinutes() * 60,
// Minutes
s = jsdate.getUTCSeconds(); // Seconds
return _pad(Math.floor((H + i + s + 36e2) / 86.4) % 1e3, 3);
g: function() { // 12-Hours; 1..12
return f.G() % 12 || 12;
G: function() { // 24-Hours; 0..23
return jsdate.getHours();
h: function() { // 12-Hours w/leading 0; 01..12
return _pad(f.g(), 2);
H: function() { // 24-Hours w/leading 0; 00..23
return _pad(f.G(), 2);
i: function() { // Minutes w/leading 0; 00..59
return _pad(jsdate.getMinutes(), 2);
s: function() { // Seconds w/leading 0; 00..59
return _pad(jsdate.getSeconds(), 2);
u: function() { // Microseconds; 000000-999000
return _pad(jsdate.getMilliseconds() * 1000, 6);
// Timezone
e: function() { // Timezone identifier; e.g. Atlantic/Azores, ...
// The following works, but requires inclusion of the very large
// timezone_abbreviations_list() function.
/* return that.date_default_timezone_get();
throw 'Not supported (see source code of date() for timezone on how to add support)';
I: function() { // DST observed?; 0 or 1
// Compares Jan 1 minus Jan 1 UTC to Jul 1 minus Jul 1 UTC.
// If they are not equal, then DST is observed.
var a = new Date(f.Y(), 0),
// Jan 1
c = Date.UTC(f.Y(), 0),
// Jan 1 UTC
b = new Date(f.Y(), 6),
// Jul 1
d = Date.UTC(f.Y(), 6); // Jul 1 UTC
return ((a - c) !== (b - d)) ? 1 : 0;
O: function() { // Difference to GMT in hour format; e.g. +0200
var tzo = jsdate.getTimezoneOffset(),
a = Math.abs(tzo);
return (tzo > 0 ? "-" : "+") + _pad(Math.floor(a / 60) * 100 + a % 60, 4);
P: function() { // Difference to GMT w/colon; e.g. +02:00
var O = f.O();
return (O.substr(0, 3) + ":" + O.substr(3, 2));
T: function() { // Timezone abbreviation; e.g. EST, MDT, ...
// The following works, but requires inclusion of the very
// large timezone_abbreviations_list() function.
/* var abbr = '', i = 0, os = 0, default = 0;
if (!tal.length) {
tal = that.timezone_abbreviations_list();
if (that.php_js && that.php_js.default_timezone) {
default = that.php_js.default_timezone;
for (abbr in tal) {
for (i=0; i < tal[abbr].length; i++) {
if (tal[abbr][i].timezone_id === default) {
return abbr.toUpperCase();
for (abbr in tal) {
for (i = 0; i < tal[abbr].length; i++) {
os = -jsdate.getTimezoneOffset() * 60;
if (tal[abbr][i].offset === os) {
return abbr.toUpperCase();
return 'UTC';
Z: function() { // Timezone offset in seconds (-43200...50400)
return -jsdate.getTimezoneOffset() * 60;
// Full Date/Time
c: function() { // ISO-8601 date.
return 'Y-m-d\\TH:i:sP'.replace(formatChr, formatChrCb);
r: function() { // RFC 2822
return 'D, d M Y H:i:s O'.replace(formatChr, formatChrCb);
U: function() { // Seconds since UNIX epoch
return jsdate / 1000 | 0;
this.date = function(format, timestamp) {
that = this;
jsdate = (timestamp === undefined ? new Date() : // Not provided
(timestamp instanceof Date) ? new Date(timestamp) : // JS Date()
new Date(timestamp * 1000) // UNIX timestamp (auto-convert to int)
return format.replace(formatChr, formatChrCb);
return this.date(format, timestamp);
$(function() {
$('.ms-noWrap').text(date('l, F jS, Y, h:i:s A'));
</script>
Note: You should change the class name to fit your environment.
http://jsfiddle.net/licson0729/jHHsm/
More reference:
http://social.technet.microsoft.com/Forums/sharepoint/en-US/580b9c50-f945-4931-b68f-da68d84e766e/how-to-display-current-date-time-in-share-point-using-jquery
Thanks & Regards,
Jason
Jason Guo
TechNet Community Support

Time in microseconds

Can someone tell me how can I get the current time to the microsecond level. If I use sy-uzeit, it provides only till the seconds level.
Thanks..
Swetha.

hi,
5555178 Microseconds = 5.555178 Seconds
so
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so convert hours, minutes to seconds and then convert seconds to micro seconds .....
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<snip>
Java 1.5 added nanosecond methods for hardware/OS
combinations that can support it.Which at current includes none at all :)<snip>
Are you saying that System.nanoTime() isn't supported at the present time?
That's not correct - I am running a 3 GB Pentium 4, a relatively recent GigaByte m/b and XP Pro, and get very good microsecond and submicrosecond results from the method.
I executed 2 consecutuive calls to the method, like so
startTime = System.nanoTime();
estimatedTime = System.nanoTime() - startTime;and averaged 100 repetitions.
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Commandline                     1300
CrimsonEditor                    500
jEdit                            700
NetBeans IDE 4.1                1050So, depending on the method of execution, nanosecond precision ranges from 500 to 1300 (0.5 microsecond to 1.3 microsecond). Accuracy (repeatability) is not as good - there are outliers in the individual times, probably due to Garbage Collections. However excluding those outliers, times appear reasonably repeatable.

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Hello,
i am tring to generate current time in the format yyyy-mm-ddThh:mm:ssZ in my xlst file.
the following info are necessary,
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This should work but it needs testing out around midnight ( not sure if it is 00:00 or 24:00):
<%@ page import="java.util.*" %>
<html>
<head><title>Time Page</title>
</head>
<body>
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<% for (int i=0; i < 24; i++) { %>
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The issue:
The "Current time bar" in iOS5 Calendar is showing up one hour ahead after time switch as of yesterday (11/5/2011 Los Angeles, CA)
What I know:
System time on Mac, Iphone and Ipad shows up as the right time
Current time bar in iCal on MacOSX 10.7.2 shows right
Current time bar in Calendar on icloud.com shows right
Common posts:
This post seems to be experiencing the same issue.

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Aug 04 2009, 5:11 pm.
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Eureka!
I now have the answer, and hopefully this will help anybody else with a similar problem.
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[Using Span|http://tus.svn.sourceforge.net/viewvc/tus/tjacobs/util/] would make this easy

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currently, the only way to bring up the current time is to (1) hit the home button (brings up phone controls), (2) slide to unlock, (3) hit home again (to get to enter passcode screen), and (4) enter passcode to see time in green bar at the top of the screen. it's a cumbersome process.

If I receive a call when locked, after answering, I can see the time in the top status bar...

Current time in microseconds

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