`System.currentTimeMillis()` does give you the number of milliseconds since January 1, 1970 00:00:00 UTC. The reason you see local times might be because you convert a `Date` instance to a string before using it. You can use `DateFormat`s to convert `Date`s to `String`s in any timezone:

    DateFormat df = DateFormat.getTimeInstance();
    df.setTimeZone(TimeZone.getTimeZone(&quot;gmt&quot;));
    String gmtTime = df.format(new Date());

Also [see this related question][1].


  [1]: https://stackoverflow.com/questions/308683/how-can-i-get-the-current-date-and-time-in-utc-or-gmt-in-java

I have an web application that I&#39;m working on, it was working fine until my curiosity got the better of me and I right-clicked on a view and chose Set As Start Page option.  Now, whenever I run my application it takes me to the Resource Not Found error page.  I have the default register route set in my Global config route which was working fine before.  I notice that the URL now reads:

http://localhost:1234/Views/User/Login.aspx

instead of

http://localhost:1234/

like it was before.  I&#39;m not sure how to undo this action or what was changed, I&#39;ve looked in my web.config file but I&#39;m not sure what to look for exactly, Help is appreciated.

Visual Studio ASP.Net MVC undo set as start page action

I screwed up and created a column as a varchar(255) where that is no longer sufficient. I&#39;ve read that varchar has no performance benefits over text on Postgres, and so would like to convert the varchar to a text column in a safe way that preserves the data.

What&#39;s the best way for me to do this?

Postgres: Convert varchar to text

What is the function to get the current UTC time. I have tried with System.getCurrentTime but i get the current date and time of the device.

Thanks

Android get Current UTC time

<p>What is the function to get the current UTC time. I have tried with System.getCurrentTime but i get the current date and time of the device.</p>
<p>Thanks</p>


What is the difference between `PrintStream` and `PrintWriter`? They have many methods in common due to which I often mix these two classes up. Moreover, I think we can use them for exactly the same things. But there has to be a difference, otherwise, there would have been only one class.

I have searched the archives, but couldn&#39;t find this question.

Java: Difference between PrintStream and PrintWriter

Could someone please give me some sample code that uses an output parameter in function? I&#39;ve tried to Google it but just found it just in functions. I&#39;d like to use this output value in another function.

The code I am developing intended to be run in Android. 

How to use an output parameter in Java?


Are there any best practices to get Junit execute a function once in a test file , and it should also not be static.

like `@BeforeClass` on non static function?

Here is an ugly solution :

    @Before void init(){
        if (init.get() == false){
            init.set(true);
            // do once block
        }
    }

well this is something i dont want to do , and i am looking for an integrated junit solution.




Junit before class ( non static )

I simply need to read each row in a table in my MySQL database using Hibernate and write a file based on it.  But there are 90 million rows and they are pretty big.  So it seemed like the following would be appropriate:

    ScrollableResults results = session.createQuery(&quot;SELECT person FROM Person person&quot;)
                .setReadOnly(true).setCacheable(false).scroll(ScrollMode.FORWARD_ONLY);
    while (results.next())
        storeInFile(results.get()[0]);

The problem is the above will try and load all 90 million rows into RAM before moving on to the while loop... and that will kill my memory with OutOfMemoryError: Java heap space exceptions :(.

So I guess ScrollableResults isn&#39;t what I was looking for?  What is the proper way to handle this?  I don&#39;t mind if this while loop takes days (well I&#39;d love it to not).

I guess the only other way to handle this is to use setFirstResult and setMaxResults to iterate through the results and just use regular Hibernate results instead of ScrollableResults.  That feels like it will be inefficient though and will start taking a ridiculously long time when I&#39;m calling setFirstResult on the 89 millionth row...

UPDATE: setFirstResult/setMaxResults doesn&#39;t work, it turns out to take an unusably long time to get to the offsets like I feared.  There must be a solution here!  Isn&#39;t this a pretty standard procedure??  I&#39;m willing to forgo Hibernate and use JDBC or whatever it takes.

UPDATE 2: the solution I&#39;ve come up with which works ok, not great, is basically of the form:

    select * from person where id &gt; &lt;offset&gt; and &lt;other_conditions&gt; limit 1

Since I have other conditions, even all in an index, it&#39;s still not as fast as I&#39;d like it to be...  so still open for other suggestions..

Using Hibernate&#39;s ScrollableResults to slowly read 90 million records

Is there a simpler way of reordering methods within a class source file in IntelliJ than cutting and pasting the code manually? Nowadays I often need this while refactoring legacy code, e.g. to move related methods close to each other in the source code.

In Eclipse AFAIK there is a view similar to the Structure view of IntelliJ, where I can drag and drop methods around. However, this does not work in IntelliJ and I couldn&#39;t find any hints from its help either.

I am using IntelliJ 9.0.2 to be specific.


Simple way to reorder methods of a Java class in IntelliJ?

I would like to send messages in the form of JSON objects to a server and parse the JSON response from the server.

Example of JSON object

    {
      &quot;post&quot;: {
        &quot;username&quot;: &quot;John Doe&quot;,
        &quot;message&quot;: &quot;test message&quot;,
        &quot;image&quot;: &quot;image url&quot;,
        &quot;time&quot;:  &quot;current time&quot;
      }
    }

I am trying to parse the JSON manually by going attribute by attribute. Is there any library/utility I can use to make this process easier?

Sending and Parsing JSON Objects in Android

Reading the limited documentation that Google has provided, I get the feeling that it is possible to change the look (drawable) of a ProgressBar/ProgressDialog by simply creating a new style an assigning it to the style property of the ProgressBar. But I cannot get this to work properly. Here is what I did so far:

I created a shape like this (mp2.xml)

    &lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot;?&gt;
    &lt;shape xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;
      android:shape=&quot;ring&quot;
      android:innerRadiusRatio=&quot;4&quot;
      android:thicknessRatio=&quot;4&quot;
      android:useLevel=&quot;false&quot;&gt;
     &lt;size android:width=&quot;50dip&quot; android:height=&quot;50dip&quot; /&gt;
     &lt;gradient android:type=&quot;sweep&quot; android:useLevel=&quot;false&quot; android:startColor=&quot;#300000ff&quot; android:centerColor=&quot;#500000ff&quot; android:endColor=&quot;#ff0000ff&quot; /&gt;
    &lt;/shape&gt;


then created an animation (mp3.xml) like this:

    &lt;?xml version=&quot;1.0&quot; encoding=&quot;utf-8&quot;?&gt;
    &lt;animation-list xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot; android:oneshot=&quot;false&quot;&gt;
     &lt;item android:duration=&quot;70&quot;&gt;
      &lt;rotate xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot; android:drawable=&quot;@drawable/mp2&quot; android:pivotX=&quot;50%&quot; android:pivotY=&quot;50%&quot; android:fromDegrees=&quot;0&quot; android:toDegrees=&quot;30&quot; android:repeatCount=&quot;1&quot; /&gt;
     &lt;/item&gt;
     &lt;item android:duration=&quot;70&quot;&gt;
      &lt;rotate xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot; android:drawable=&quot;@drawable/mp2&quot; android:pivotX=&quot;50%&quot; android:pivotY=&quot;50%&quot; android:fromDegrees=&quot;30&quot; android:toDegrees=&quot;60&quot; android:repeatCount=&quot;1&quot; /&gt;
     &lt;/item&gt;
     &lt;item android:duration=&quot;70&quot;&gt;
      &lt;rotate xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot; android:drawable=&quot;@drawable/mp2&quot; android:pivotX=&quot;50%&quot; android:pivotY=&quot;50%&quot; android:fromDegrees=&quot;60&quot; android:toDegrees=&quot;90&quot; android:repeatCount=&quot;1&quot; /&gt;
     &lt;/item&gt;
     &lt;item android:duration=&quot;70&quot;&gt;
      &lt;rotate xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot; android:drawable=&quot;@drawable/mp2&quot; android:pivotX=&quot;50%&quot; android:pivotY=&quot;50%&quot; android:fromDegrees=&quot;90&quot; android:toDegrees=&quot;120&quot; android:repeatCount=&quot;1&quot; /&gt;
     &lt;/item&gt;
     &lt;item android:duration=&quot;70&quot;&gt;
      &lt;rotate xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot; android:drawable=&quot;@drawable/mp2&quot; android:pivotX=&quot;50%&quot; android:pivotY=&quot;50%&quot; android:fromDegrees=&quot;120&quot; android:toDegrees=&quot;150&quot; android:repeatCount=&quot;1&quot; /&gt;
     &lt;/item&gt;
     &lt;item android:duration=&quot;70&quot;&gt;
      &lt;rotate xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot; android:drawable=&quot;@drawable/mp2&quot; android:pivotX=&quot;50%&quot; android:pivotY=&quot;50%&quot; android:fromDegrees=&quot;150&quot; android:toDegrees=&quot;180&quot; android:repeatCount=&quot;1&quot; /&gt;
     &lt;/item&gt;
     &lt;item android:duration=&quot;70&quot;&gt;
      &lt;rotate xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot; android:drawable=&quot;@drawable/mp2&quot; android:pivotX=&quot;50%&quot; android:pivotY=&quot;50%&quot; android:fromDegrees=&quot;180&quot; android:toDegrees=&quot;210&quot; android:repeatCount=&quot;1&quot; /&gt;
     &lt;/item&gt;
     &lt;item android:duration=&quot;70&quot;&gt;
      &lt;rotate xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot; android:drawable=&quot;@drawable/mp2&quot; android:pivotX=&quot;50%&quot; android:pivotY=&quot;50%&quot; android:fromDegrees=&quot;210&quot; android:toDegrees=&quot;240&quot; android:repeatCount=&quot;1&quot; /&gt;
     &lt;/item&gt;
     &lt;item android:duration=&quot;70&quot;&gt;
      &lt;rotate xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot; android:drawable=&quot;@drawable/mp2&quot; android:pivotX=&quot;50%&quot; android:pivotY=&quot;50%&quot; android:fromDegrees=&quot;240&quot; android:toDegrees=&quot;270&quot; android:repeatCount=&quot;1&quot; /&gt;
     &lt;/item&gt;
     &lt;item android:duration=&quot;70&quot;&gt;
      &lt;rotate xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot; android:drawable=&quot;@drawable/mp2&quot; android:pivotX=&quot;50%&quot; android:pivotY=&quot;50%&quot; android:fromDegrees=&quot;270&quot; android:toDegrees=&quot;300&quot; android:repeatCount=&quot;1&quot; /&gt;
     &lt;/item&gt;
     &lt;item android:duration=&quot;70&quot;&gt;
      &lt;rotate xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot; android:drawable=&quot;@drawable/mp2&quot; android:pivotX=&quot;50%&quot; android:pivotY=&quot;50%&quot; android:fromDegrees=&quot;300&quot; android:toDegrees=&quot;330&quot; android:repeatCount=&quot;1&quot; /&gt;
     &lt;/item&gt;
     &lt;item android:duration=&quot;70&quot;&gt;
      &lt;rotate xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot; android:drawable=&quot;@drawable/mp2&quot; android:pivotX=&quot;50%&quot; android:pivotY=&quot;50%&quot; android:fromDegrees=&quot;330&quot; android:toDegrees=&quot;360&quot; android:repeatCount=&quot;1&quot; /&gt;
     &lt;/item&gt;
    &lt;/animation-list&gt;


then created a style (attrs.xml) like this:

    &lt;?xml version=&quot;1.0&quot; encoding=&quot;utf-8&quot;?&gt;
    &lt;resources&gt;
     &lt;style parent=&quot;@android:style/Widget.ProgressBar&quot; name=&quot;customProgressBar&quot;&gt;
      &lt;item name=&quot;android:progressDrawable&quot;&gt;@anim/mp3&lt;/item&gt;
     &lt;/style&gt;
    &lt;/resources&gt;


and the in my main.xml I have set the style like this:

    &lt;?xml version=&quot;1.0&quot; encoding=&quot;utf-8&quot;?&gt;
    &lt;LinearLayout xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;
           android:orientation=&quot;vertical&quot;
           android:layout_width=&quot;fill_parent&quot;
           android:layout_height=&quot;fill_parent&quot; android:drawingCacheQuality=&quot;high&quot;&gt;
     &lt;ProgressBar android:id=&quot;@+id/ProgressBar01&quot;
         android:layout_width=&quot;wrap_content&quot;
         android:layout_height=&quot;wrap_content&quot; style=&quot;@style/customProgressBar&quot;/&gt;
    &lt;/LinearLayout&gt;


But it still shows the same drawable as before. What am I doing wrong?

Custom Drawable for ProgressBar/ProgressDialog

I need to find out how big a view will be after attaching it to its parent.

I have overridden this method:

    onMeasure(int, int);

but it looks like this method is invoked only when I actually add my custom view to it&#39;s container using:

    addView(myView);

Do you think there is a way to get this information before rendering the view itself? Basically I need to know the actuall size before attaching it and not attach the view at all if it would take more certain amount of space.

anybody?


measuring a view before rendering it

I have created a specific List which exists out of the following elements to create a scrollable list with every row containing a Image on the left side and some text on the right side:

To begin with a &quot;root&quot; layout :

    &lt;LinearLayout
	    xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;
    	android:orientation=&quot;vertical&quot;
    	android:layout_width=&quot;fill_parent&quot; 
    	android:layout_height=&quot;fill_parent&quot;
    	android:background=&quot;#C8C8C8&quot;
    	&gt;
	    &lt;TextView
		    android:layout_width=&quot;fill_parent&quot;
		    android:layout_height=&quot;wrap_content&quot;/&gt;
	    &lt;ListView
	    	android:id=&quot;@android:id/list&quot;
	    	android:layout_width=&quot;fill_parent&quot; 
	    	android:layout_height=&quot;fill_parent&quot;
	    	android:drawSelectorOnTop=&quot;false&quot;
	    	android:divider=&quot;#C8C8C8&quot;
	    	android:background=&quot;#C8C8C8&quot;/&gt;
    &lt;/LinearLayout&gt;

and then within the ListView I place the following &quot;row&quot; item :

    &lt;?xml version=&quot;1.0&quot; encoding=&quot;utf-8&quot;?&gt;
    &lt;LinearLayout xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;
    	android:layout_width=&quot;fill_parent&quot;
    	android:layout_height=&quot;wrap_content&quot;
    	android:orientation=&quot;horizontal&quot;
    	android:background=&quot;@drawable/bg_row&quot;
    &gt;
    	&lt;ImageView
    		android:layout_width=&quot;wrap_content&quot;
    		android:paddingLeft=&quot;10px&quot;
    		android:paddingRight=&quot;15px&quot;
    		android:paddingTop=&quot;5px&quot;
    		android:paddingBottom=&quot;5px&quot;
    		android:layout_height=&quot;wrap_content&quot;
    		android:src=&quot;@drawable/bg_image&quot;
    	/&gt;
    	&lt;TextView
    		android:layout_width=&quot;wrap_content&quot;
    		android:layout_height=&quot;wrap_content&quot;
    		android:paddingTop=&quot;5px&quot;
    		android:paddingBottom=&quot;5px&quot;
    		android:textSize=&quot;16sp&quot;
    		android:textColor=&quot;#000000&quot;
    		android:layout_gravity=&quot;center&quot;
    		android:maxHeight=&quot;50px&quot;/&gt;
    &lt;/LinearLayout&gt;

As long as the screen is shown statically (as in no movement) it will be shown correctly, but when I start scrolling through the list the background of the row-item (an &quot;icon&quot; as can be shown in the code) will be shown correctly but the background of the &quot;root&quot; layout will become completely black... when the scrolling stops the background will, most of the times, get back its color...
As I test I also added a `TextView` in that root-element with the same background, this one will detain it&#39;s color when the List is scrolled...
Any idea why this is happening, and how to solve this?

Background ListView becomes black when scrolling

How do I get the time difference between two `DateTime` objects using C#?


How do I get the time difference between two DateTime objects using C#?

I&#39;m trying to write a script that will check if the current date/time is past the `05/15/2010 at 4PM`

How can I use PHP&#39;s date() function to perform this check? 

How can I check if the current date/time is past a set date/time?

How do you get the 30 days before today in SQL.

how to get the 30 days before date from Todays Date

How can I convert UNIX timestamp (bigint) to DateTime in SQL Server?

How can I convert bigint (UNIX timestamp) to datetime in SQL Server?

I have an array such as:

    Array
    (
    [0] =&gt; Array
        (
            [id] =&gt; 2
            [type] =&gt; comment
            [text] =&gt; hey
            [datetime] =&gt; 2010-05-15 11:29:45
        )
 
    [1] =&gt; Array
        (
            [id] =&gt; 3
            [type] =&gt; status
            [text] =&gt; oi
            [datetime] =&gt; 2010-05-26 15:59:53
        )
 
    [2] =&gt; Array
        (
            [id] =&gt; 4
            [type] =&gt; status
            [text] =&gt; yeww
            [datetime] =&gt; 2010-05-26 16:04:24
        )
 
    )


Can anyone suggest a way to sort/order this based on the datetime element?

PHP Sort a multidimensional array by element containing Y-m-d H:i:s date

 We can do this:
 
    i = Time.now.to_i 

  for example current:
     
    i = 1274335854

can I convert i back to time?

Ruby / Rails: convert int to time OR get time from integer?

How do I check if daylight saving time is in effect?

Python daylight savings time

How do you convert Unix [epoch time][1] into real time in C#? (Epoch beginning 1/1/1970)

[1]: http://en.wikipedia.org/wiki/Unix_time

How do you convert epoch time in C#?

How to find the time elapsed since a date time stamp like `2010-04-28 17:25:43`, final out put text should be like `xx Minutes Ago`/`xx Days Ago`

PHP How to find the time elapsed since a date time?

I have a web app which orders stuff using a timestamp, which is just a long. My web app backend happens to be written in java, so I am using:

    long timestamp = System.currentTimeMillis();

what year (approximately) will this fail? I mean at some point, the range of a long is going to overflow, right? We may all be long-dead, but I&#39;m just curious. Will it be like y2k all over again? What can I do to prepare for this? Ridiculous, I know, just curious!


When will System.currentTimeMillis() overflow?

In Python, how do you find what UTC time offset the computer is set to? 

Getting computer&#39;s UTC offset in Python

I have a python datetime object (representing five minutes from now) which I would like to convert to UTC. I am planning to output it in RFC 2822 format to put in an HTTP header, but I am not sure if that matters for this question. I found some information on this site about converting time objects, and it looks simpler that way, but this time I really want to use datetime objects, because I am using timedeltas to adjust them:

I tried something like this:

    from datetime import datetime, timedelta

    now = datetime.now()
    fiveMinutesLater = datetime.now() + timedelta(minutes=5)
    fiveMinutesLaterUtc = ???

Nothing in the time or datetime module looks like it would help me. It seems like I may be able to do it by passing the datetime object through 3 or 4 functions, but I am wondering if there is a simpler way.

I would prefer not to use third-party modules, but I may if it is the only reasonable choice.

How can I get the current time (now) in UTC?

How do I query a mysql db to return all records with a datetime older than 1 week ago. Note that the datetime table stores everything in UTC, and I should be comparing it in that itself.

Just to be clear - I&#39;m looking for a pure mysql query.

MYSQL query / dates older than 1 week ago (all datetimes in UTC)

**Input**: strings with date and optional time. Different representations would be nice but necessary. The strings are user-supplied and can be malformed. Examples:

 - `&quot;2004-03-21 12:45:33&quot;` (I consider this the default layout)
 - `&quot;2004/03/21 12:45:33&quot;` (optional layout)
 - `&quot;23.09.2004 04:12:21&quot;` (german format, optional)
 - `&quot;2003-02-11&quot;` (time may be missing)

&lt;/pre&gt;

**Needed Output**: Seconds since Epoch (1970/01/01 00:00:00) or some other fixed point.

**Bonus**: Also, reading the UTC-offset of the local system time would be great.

The input is assumed to be a local time on the machine in question.
The output needs to be UTC. System is Linux only (Debian Lenny and Ubuntu needed).

I have tried to use `boost/date_time`, but must admit I can&#39;t wrap my head around the documentation. The following works without the needed conversion from system local time to UTC:

    std::string date = &quot;2000-01-01&quot;;
    boost::posix_time::ptime ptimedate = boost::posix_time::time_from_string(date);
    ptimedate += boost::posix_time::hours(Hardcoded_UTC_Offset);// where to get from?
    struct tm = boost::posix_time::to_tm(ptimedate);
    int64_t ticks = mktime(&amp;mTmTime);

I think `boost::date_time` can provide the needed UTC offset, but I wouldn&#39;t know how.


How to parse date/time from string?

I have been fighting with this for a bit now. I’m trying to convert epoch to a date object. The epoch is sent to me in UTC. Whenever you pass `new Date()` an epoch, it assumes it’s local epoch. I tried creating a UTC object, then using `setTime()` to adjust it to the proper epoch, but the only method that seems useful is `toUTCString()` and strings don’t help me. If I pass that string into a new date, it should notice that it’s UTC, but it doesn’t.

    new Date( new Date().toUTCString() ).toLocaleString()

My next attempt was to try to get the difference between local current epoch and UTC current epoch, but I wasn’t able to get that either.

    new Date( new Date().toUTCString() ).getTime() - new Date().getTime()

It’s only giving me very small differences, under 1000, which is in milliseconds.

Any suggestions?

Content Type	Original Author	Original Content on Stackoverflow
Question	Gerardo	View Question on Stackoverflow
Solution 1 - Java	Josef Pfleger	View Answer on Stackoverflow

Android get Current UTC time

Java Problem Overview

Java Solutions

Solution 1 - Java

Postgres: Convert varchar to text

Visual Studio ASP.Net MVC undo set as start page action

Attributions