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Polymorphism: Why use “List list = new ArrayList” instead of “ArrayList list = new ArrayList”? [dupl
...uple your code from a specific implementation of the interface. When you write your code like this:
List list = new ArrayList();
the rest of your code only knows that data is of type List, which is preferable because it allows you to switch between different implementations of the List interfac...
Import Maven dependencies in IntelliJ IDEA
...estion about IntelliJ IDEA 11. I just imported a project from subversion - its a maven project. But I have a problem in maven library dependencies so that I can't include all maven dependencies automatically - IDEA shows dependency errors only when I open that class/ Thats what I get here:
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How to overcome root domain CNAME restrictions?
...ains to refer to those applications, usually they want that any user that either type http://www.customer1.example or http://customer1.example goes to their web application.
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Bash tool to get nth line from a file
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head and pipe with tail will be slow for a huge file. I would suggest sed like this:
sed 'NUMq;d' file
Where NUM is the number of the line you want to print; so, for example, sed '10q;d' file to print the 10th line of file.
Explanation:...
Convert UTC Epoch to local date
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 m...
How to Copy Text to Clip Board in Android?
...follow
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edited Aug 8 '18 at 1:39
Pang
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Android adb “Unable to open sync connection!”
...SB port. Sometimes disconnecting and reconnecting the cord worked but then it stopped working completely.
However, disabling USB debugging on the phone and then re-enabling it has worked so far. Hopefully it keeps working! These fixes really seem like silly hacks.. I'm not sure what the underlying ...
Do browsers parse javascript on every page load?
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These are the details that I've been able to dig up. It's worth noting first that although JavaScript is usually considered to be interpreted and run on a VM, this isn't really the case with the modern interpreters, which tend to compile the source directly into machine code (w...
Commenting multiple lines in DOS batch file
I have written huge MS DOS Batch file. To test this batch file I need to execute some lines only and want to hide/comment out remaining.
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What does the ??!??! operator do in C?
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??! is a trigraph that translates to |. So it says:
!ErrorHasOccured() || HandleError();
which, due to short circuiting, is equivalent to:
if (ErrorHasOccured())
HandleError();
Guru of the Week (deals with C++ but relevant here), where I picked this up.
Pos...