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Difference between JVM and HotSpot?
...t starts by running interpreted, and watches the actual performance of the app. Parts of the app are then selected to be fully-compiled as native code and cached, for much faster execution. HotSpot was developed at Sun as a commercial product. After acquiring Sun, Oracle further evolved HotSpot by c...
accepting HTTPS connections with self-signed certificates
...uncyCastle provider and import the certs
Load the keystore in your android app and use it for the secured connections (I recommend to use the Apache HttpClient instead of the standard java.net.ssl.HttpsURLConnection (easier to understand, more performant)
Grab the certs
You have to obtain all certi...
how to install gcc on windows 7 machine?
...x to install packages, and includes three environments, for building msys2 apps, 32-bit native apps, and 64-bit native apps. (You probably want to build 32-bit native apps.)
https://msys2.github.io/
You could also go full-monty and install code::blocks or some other gui editor that comes with a c...
Does hosts file exist on the iPhone? How to change it? [closed]
I am developing an application that query to the server. In my Mac, I use the hosts file to change the dns to point to a local server within my local area network.
...
When - and why - should you store data in the Windows Registry?
...big.
Solution (WinXP): Large blocks of individual data moved to user's own Application Data folder.
Problem: Good for large amounts of data, but rather complex for small amounts.
Solution (.NET): small amounts of fixed, read-only data stored in .config (Xml) files in same folder as application, with...
How to use/install gcc on Mac OS X 10.8 / Xcode 4.4
... SDK frameworks and
headers. Many useful tools are included, such as the Apple LLVM
compiler, linker, and Make. If you use Xcode, these tools are also
embedded within the Xcode IDE, and can be installed on your system
using the Downloads preferences pane within Xcode 4.3 and later. This
p...
How to set my default shell on Mac?
...
These are applicable to MacOS Sierra 10.12.5 (16F73) and probably some other recent and upcoming versions of MacOS.
chsh is not enough to change the default shell. Make sure you press Command+, while your terminal is open and change ...
Xcode without Storyboard and ARC
...
Create a project with an Empty application and Add any viewcontroller (i added TestViewController here)
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions: (NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc]...
In Django, how does one filter a QuerySet with dynamic field lookups?
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A simplified example:
In a Django survey app, I wanted an HTML select list showing registered users. But because we have 5000 registered users, I needed a way to filter that list based on query criteria (such as just people who completed a certain workshop). In orde...
Sending Email in Android using JavaMail API without using the default/built-in app
I am trying to create a mail sending application in Android.
25 Answers
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