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Java system properties and environment variables

What's the difference between system properties System.getProperties() and environment variables System.getenv() in a JVM? ...
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Should try…catch go inside or outside a loop?

...w which way the performance would be affected, I guess were back to try-it-and-test (as always). – Jeffrey L Whitledge Sep 27 '08 at 18:35 1 ...
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How to download all files (but not HTML) from a website using wget?

How to use wget and get all the files from website? 8 Answers 8 ...
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How to make an Android device vibrate?

I wrote an Android application. Now, I want to make the device vibrate when a certain action occurs. How can I do this? 13 ...
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How to get everything after last slash in a URL?

... You don't need fancy things, just see the string methods in the standard library and you can easily split your url between 'filename' part and the rest: url.rsplit('/', 1) So you can get the part you're interested in simply with: url.rsplit('/', 1)[-1] ...
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Brew doctor says: “Warning: /usr/local/include isn't writable.”

... Take ownership of it and everything in it. Mac OS High Sierra or newer: (ty to Kirk in the comments below) $ sudo chown -R $(whoami) $(brew --prefix)/* Previous versions of macos: $ sudo chown -R $USER:admin /usr/local/include Then do anot...
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How to list active / open connections in Oracle?

... Error starting at line 1 in command: select * from FROM v$session Error at Command Line:1 Column:14 Error report: SQL Error: ORA-00903: invalid table name 00903. 00000 - "invalid table name" *Cause: *Action: – pistacchio ...
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How to include package data with setuptools/distribute?

...ry distribution. In any case, using MANIFEST.in will work both for binary and for source distributions. share | improve this answer | follow | ...
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What is a deadlock?

...s try to access the same resource at the same time. One process loses out and must wait for the other to finish. A deadlock occurs when the waiting process is still holding on to another resource that the first needs before it can finish. So, an example: Resource A and resource B are used by pro...
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Generating a SHA-256 hash from the Linux command line

... On OSX, it might be handy to create an alias: alias sha256sum='shasum --algorithm 256' – Jonathan Cross Jun 4 '16 at 13:21 1 ...