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What version of javac built my jar?
...l what version of the Java compiler was used to build a jar? I have a jar file, and it could have been built in any one of three JDKs. We need to know exactly which one, so we can certify compatibility. Is the compiler version embedded somewhere in the class files or jar?
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Git command to display HEAD commit id?
What command can I use to print out the commit id of HEAD?
9 Answers
9
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How do you include additional files using VS2010 web deployment packages?
...out this at Web Deployment Tool (MSDeploy) : Build Package including extra files or excluding specific files.
Here is the synopsis. After including files, I show how to exclude files as well.
Including Extra Files
Including extra files into the package is a bit harder but still no bigee if you ar...
How can I select random files from a directory in bash?
I have a directory with about 2000 files. How can I select a random sample of N files through using either a bash script or a list of piped commands?
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Difference between File.separator and slash in paths
What is the difference between using File.separator and a normal / in a Java Path-String?
14 Answers
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How to count lines in a document?
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Use wc:
wc -l <filename>
This will output the number of lines in <filename>:
$ wc -l /dir/file.txt
3272485 /dir/file.txt
Or, to omit the <filename> from the result use wc -l < <filename>:
$ wc -l < /dir/file...
Difference between Mock / Stub / Spy in Spock test framework
...ass which would otherwise use external resources like network connections, files or databases or maybe use dozens of other objects. The advantage of mocks is that you can isolate the class under test from the rest of the system.
A stub is also a dummy class providing some more specific, prepared or...
MySQL COUNT DISTINCT
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Select
Count(Distinct user_id) As countUsers
, Count(site_id) As countVisits
, site_id As site
From cp_visits
Where ts >= DATE_SUB(NOW(), INTERVAL 1 DAY)
Group By site_id
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What's the purpose of META-INF?
In Java, you often see a META-INF folder containing some meta files. What is the purpose of this folder and what can I put there?
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#import using angle brackets < > and quote marks “ ”
...re allowed to use <Header.h> or "Header.h" when you're importing files in Objective-C. So far my observation has been that you use the quote marks "" for files in your project that you've got the implementation source to, and angle brackets <> when you're referencing a library or...