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Under what conditions is a JSESSIONID created?
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Not if you use just Servlet API. There may be server-specific extensions (like Websphere's session sharing as you point out) though.
– Peter Štibraný
Mar 3 '09 at 15:39
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What exactly do the Vagrant commands do?
...d have blogged about it.
In summary, it is a good wrapper over VirtualBox APIs and Commands. You can have a look at the VirtualBox commands to understand some of the capabilities better.
share
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im...
How to find the Number of CPU Cores via .NET/C#?
...essors"]);
}
Processors excluded from Windows:
You can also use Windows API calls in setupapi.dll to discover processors that have been excluded from Windows (e.g. through boot settings) and aren't detectable using the above means. The code below gives the total number of logical processors (I ha...
How do I determine the size of my array in C?
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For Windows API programming in C or C++, there is the ARRAYSIZE makro defined in WinNT.h (which gets pulled in by other headers). So WinAPI users don't need to define their own makro.
– Lumi
Apr 23 ...
Intercept page exit event
...hortly get a subsequent unload event, developer.mozilla.org/en-US/docs/Web/API/Window/unload_event but I don't think there's a synchronous way.
– scipilot
May 17 at 2:03
add a...
Differences between cookies and sessions?
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Google JSESSIONID. This will explain how the Servlet API initially uses URL re-writing and then, if cookies are enabled, cookies to manage sessions.
HTTP is stateless so the client browser must send the id of its session to the server with each request. The server, through wh...
java: Class.isInstance vs Class.isAssignableFrom
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For brevity, we can understand these two APIs like below:
X.class.isAssignableFrom(Y.class)
If X and Y are the same class, or X is Y's super class or super interface, return true, otherwise, false.
X.class.isInstance(y)
Say y is an instance of class Y, if X ...
Open file dialog box in JavaScript
... $("#logo").trigger('click');
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<a href="#" id="select_logo">Select Logo</a> <input type="file" id="logo">
for IE add this:
$("#logo").css('filter','alpha(opacity =...
FileNotFoundException while getting the InputStream object from HttpURLConnection
...I've only hands on experience with JAX-WS/RS from the standard Java EE 5/6 API. I'd suggest to put a breakpoint on the method responsible for processing the XML file and then step further from there.
– BalusC
Mar 21 '11 at 15:31
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What is an EJB, and what does it do?
...inciples are the same. Spring took ideas from EJBs and vice-versa. But the API, implementation, way to deploy, and some features are different.
– JB Nizet
Feb 22 '15 at 11:32
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