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What's the difference between ConcurrentHashMap and Collections.synchronizedMap(Map)?
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For your needs, use ConcurrentHashMap. It allows concurrent modification of the Map from several threads without the need to block them. Collections.synchronizedMap(map) creates a blocking Map which will degrade performance, albeit ensure consistency (if used prop...
How to handle Back button with in the dialog?
I am developing an application that when the button is pressed, it opens a dialog with OK and Cancel buttons.
8 Answers
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Using DISTINCT and COUNT together in a MySQL Query
...follow
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edited Sep 8 '14 at 10:19
user3414693
answered Jun 16 '09 at 15:47
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Copying files from one directory to another in Java
... directory to another (subdirectory) using Java. I have a directory, dir, with text files. I iterate over the first 20 files in dir, and want to copy them to another directory in the dir directory, which I have created right before the iteration.
In the code, I want to copy the review (which repre...
Xcode 6 - How to pick signing certificate/provisioning profile for Ad-Hoc distribution?
...solved using command line "xcodebuild" tool script, which is preinstalled with Xcode 6 (didn't need to re-install Xcode 5).
http://www.thecave.com/2014/09/16/using-xcodebuild-to-export-a-ipa-from-an-archive/
Script in terminal:
xcodebuild -exportArchive -archivePath $projectname.xcarchive -export...
How do I use sudo to redirect output to a location I don't have permission to write to?
... on one of our development RedHat linux boxes, and I seem to find myself quite often needing to redirect output to a location I don't normally have write access to.
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Using Django time/date widgets in custom form
...se the nifty JavaScript date and time widgets that the default admin uses with my custom view?
16 Answers
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Is it possible to display inline images from html in an Android TextView?
...If you have a look at the documentation for Html.fromHtml(text) you'll see it says:
Any <img> tags in the HTML will display as a generic replacement image which your program can then go through and replace with real images.
If you don't want to do this replacement yourself you can use th...
Grasping the Node JS alternative to multithreading
If I understand correctly Node JS is non blocking...so instead of waiting for a response from a database or other process it moved on to something else and checks back later.
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How do you detect/avoid Memory leaks in your (Unmanaged) code? [closed]
...t practices to detect memory leaks? And coding guidelines to avoid? (As if it's that simple ;)
29 Answers
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