That directory is part of a Java performance counter. There&#39;s a JVM argument for turning it off: see this [related question][1] on StackOverflow.


  [1]: https://stackoverflow.com/questions/76327/how-can-i-prevent-java-from-creating-hsperfdata-files

Is there an efficient workflow to mirror a project that is mainly hosted on bitbucket using Hg, to github?

Mirroring a HG project from Bitbucket to Github

Accenture interview question:

You have been given an array of size `2n+1` that have `n` pair of integers (can be `+ve`, `-ve` or `0`) and one unpaired element.

How would you find the unpaired element?

Pair means **duplicate**. So `(3,3)` is a pair and `(3,-3)` is **not** a pair.


find the only unpaired element in the array

Java creates `hsperfdata` directory usually in the `/tmp` directory. What purpose does this directory serve? What is the effect on the JVM if this directory is accidentally deleted?

java hsperfdata directory

<p>Java creates <code>hsperfdata</code> directory usually in the <code>/tmp</code> directory. What purpose does this directory serve? What is the effect on the JVM if this directory is accidentally deleted?</p>


After reading some material on this subject I&#39;m still not sure what the difference between a compiled language and an interpreted language is. I was told this is one of the differences between Java and JavaScript. Would someone please help me in understanding it?

What&#39;s the difference between compiled and interpreted language?

How can I prevent XSS attacks in a JSP/Servlet web application?

XSS prevention in JSP/Servlet web application

I am accessing web pages through java as follows:

    URLConnection con = url.openConnection();
		

But in some cases, a url redirects to another url. So I want to know the url to which the previous url redirected.

Below are the header fields that I got as a response:

    null--&gt;[HTTP/1.1 200 OK]
    Cache-control--&gt;[public,max-age=3600]
    last-modified--&gt;[Sat, 17 Apr 2010 13:45:35 GMT]
    Transfer-Encoding--&gt;[chunked]
    Date--&gt;[Sat, 17 Apr 2010 13:45:35 GMT]
    Vary--&gt;[Accept-Encoding]
    Expires--&gt;[Sat, 17 Apr 2010 14:45:35 GMT]
    Set-Cookie--&gt;[cl_def_hp=copenhagen; domain=.craigslist.org; path=/; expires=Sun, 17     Apr 2011 13:45:35 GMT, cl_def_lang=en; domain=.craigslist.org; path=/; expires=Sun, 17 Apr 2011 13:45:35 GMT]
    Connection--&gt;[close]
    Content-Type--&gt;[text/html; charset=iso-8859-1;]
    Server--&gt;[Apache]

So at present, I am constructing the redirected url from the value of the `Set-Cookie` header field. In the above case, the redirected url is `copenhagen.craigslist.org`

Is there any standard way through which I can determine which url the particular url is going to redirect.

I know that when a url redirects to other url, the server sends an intermediate response containing a `Location` header field that tells the redirected url but I am not receiving that intermediate response through the `url.openConnection();` method. 

Java - How to find the redirected url of a url?

I am learning Java and just found that the Interface can have fields, which are public static and final. I haven&#39;t seen any examples of these so far. What are some of the use cases of these Interface Constants and can I see some in the Java Standard Library?

What is the use of interface constants?

I&#39;m working on a project with Eclipse and by now everything was fine, but last time I&#39;ve tried building it, it returned the error,

&gt;&quot;The project was not built due to &quot;Could not delete &#39;/Torpedo/bin/bin&#39;.&quot;. Fix the problem, then try refreshing this project and building it since it may be inconsistent	Torpedo		Unknown	Java Problem&quot;

And it deleted my bin folder which stores all the images and stuff needed for the program. (Fortunately I had a backup). I&#39;ve tried googling it and tried every solution I found, but nothing helped, and also most of them suggests to delete the folder by hand, which I can&#39;t.
What should I do?

Eclipse could not delete error

I see that if we change the `HOME` (linux) or `USERPROFILE` (windows) environmental variable and run a python script, it returns the new value as the user home when I try

```
os.environ[&#39;HOME&#39;]
os.exp
```

Is there any way to find the real user home directory without relying on the environmental variable?

**edit:**  
Here is a way to find userhome in windows by reading in the registry,  
http://mail.python.org/pipermail/python-win32/2008-January/006677.html

**edit:**  
One way to find windows home using pywin32,

    from win32com.shell import shell,shellcon
    home = shell.SHGetFolderPath(0, shellcon.CSIDL_PROFILE, None, 0)


How to find the real user home directory using python?

I am trying to get the code to list all the directories in a folder, change directory into that folder and get the name of the current folder. The code I have so far is below and isn&#39;t working at the minute. I seem to be getting the parent folder name.

    import os

    for directories in os.listdir(os.getcwd()): 
        dir = os.path.join(&#39;/home/user/workspace&#39;, directories)
        os.chdir(dir)
        current = os.path.dirname(dir)
        new = str(current).split(&quot;-&quot;)[0]
        print new

I also have other files in the folder but I do not want to list them. I have tried the below code but I haven&#39;t got it working yet either.

    for directories in os.path.isdir(os.listdir(os.getcwd())): 

Can anyone see where I am going wrong?

Thanks

Got it working but it seems a bit round about.

    import os
    os.chdir(&#39;/home/user/workspace&#39;)
    all_subdirs = [d for d in os.listdir(&#39;.&#39;) if os.path.isdir(d)]
    for dirs in all_subdirs:
        dir = os.path.join(&#39;/home/user/workspace&#39;, dirs)
        os.chdir(dir)
        current = os.getcwd()
        new = str(current).split(&quot;/&quot;)[4]
        print new

List Directories and get the name of the Directory

How can I create a directory chooser in html page.&lt;br&gt;
If I use input file element I can select file only, but I need to select directory instead.&lt;br&gt;
I need to do this beacause the user should select a right path inside his computer.&lt;br&gt;
Any solutions ?

Directory Chooser in HTML page

I need to find empty directories for a given list of directories.
Some directories have directories inside it.

If inside directories are also empty I can say main directory is empty otherwise it&#39;s not empty.

How can I test this?

For example:

    A&gt;A1(file1),A2 this is not empty beacuse of file1
    B&gt;B1(no file) this is empty
    C&gt;C1,C2 this is empty



Finding empty directories

I want to write a new file with the [`FileWriter`][1]. I use it like this:

    FileWriter newJsp = new FileWriter(&quot;C:\\user\Desktop\dir1\dir2\filename.txt&quot;);

Now `dir1` and `dir2` currently don&#39;t exist. I want Java to create them automatically if they aren&#39;t already there. Actually Java should set up the whole file path if not already existing.

How can I achieve this?


  [1]: http://docs.oracle.com/javase/1.5.0/docs/api/java/io/FileWriter.html

Content Type	Original Author	Original Content on Stackoverflow
Question	pushNpop	View Question on Stackoverflow
Solution 1 - Java	Eric Eijkelenboom	View Answer on Stackoverflow

java hsperfdata directory

Java Problem Overview

Java Solutions

Solution 1 - Java

find the only unpaired element in the array

Mirroring a HG project from Bitbucket to Github

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