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What does “Could not find or load main class” mean?
...relative pathnames in the classpath, check that they resolve correctly ... from the current directory that is in effect when you run the java command.
Check that the class (mentioned in the error message) can be located on the effective classpath.
Note that the classpath syntax is different for Wind...
What is the best way to get all the divisors of a number?
...
To expand on what Shimi has said, you should only be running your loop from 1 to the square root of n. Then to find the pair, do n / i, and this will cover the whole problem space.
As was also noted, this is a NP, or 'difficult' problem. Exhaustive search, the way you are doing it, is about as ...
How SID is different from Service name in Oracle tnsnames.ora
...so give it any other
name you want.
SERVICE_NAME is the new feature from
oracle 8i onwards in which database
can register itself with listener. If
database is registered with listener
in this way then you can use
SERVICE_NAME parameter in tnsnames.ora
otherwise - use SID in tnsnam...
How to use sed to remove the last n lines of a file
I want to remove some n lines from the end of a file. Can this be done using sed?
22 Answers
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What is the difference between atomic / volatile / synchronized?
...t getNextUniqueIndex() {
return counter++;
}
It basically reads value from memory, increments it and puts back to memory. This works in single thread but nowadays, in the era of multi-core, multi-CPU, multi-level caches it won't work correctly. First of all it introduces race condition (several...
Symbolic link to a hook in git
...k changes in .git/hooks), somewhere I read that I can make a symbolic link from hooks to .git/hooks so I don't have to copy the file from one folder to the other every time someone changes it so I tried:
...
When do items in HTML5 local storage expire?
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@AndresRiofrio I can't find any documentation from Mozilla or Microsoft or the W3C that stipulates any sort of mandatory expiration. Thus I think the answer is that yes, the user agent is supposed to keep stored stuff around forever, or until the user explicitly requests...
Generating CSV file for Excel, how to have a newline inside a value
...king on its name in Windows Explorer, everything works OK.
If you open it from within Excel, the results vary:
You have only ASCII characters in the file (and no BOM): works.
You have non-ASCII characters (encoded in UTF-8) in the file, with a UTF-8 BOM at the start: it recognises that your data ...
Unable to import a module that is definitely installed
...s will be over-restricted. If you simply su first and then do the install from a full root shell, the resulting install is usable (at least it is for me). This was for pip, but may apply to apt-get as well. If others confirm this cause, may want to amend the answer accordingly?
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How to prevent buttons from submitting forms
...; return false;">Remove Last Item</button>
...that'll keep them from triggering a submit action when an exception occurs in the event handler. Then, fix your removeItem() function so that it doesn't trigger an exception:
function removeItem() {
var rows = $('form tr');
if ( rows.leng...