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Is System.nanoTime() completely useless?

...cific counter. Now consider the following case I use to measure time of a call: 15 Answers ...
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Why should Java ThreadLocal variables be static

... Because if it were an instance level field, then it would actually be "Per Thread - Per Instance", not just a guaranteed "Per Thread." That isn't normally the semantic you're looking for. Usually it's holding something like objects that are scoped to a User Conversation, Web Request...
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How to reset Jenkins security settings from the command line?

Is there a way to reset all (or just disable the security settings) from the command line without a user/password as I have managed to completely lock myself out of Jenkins ? ...
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How do I increase the RAM and set up host-only networking in Vagrant?

...ing is do with end without nesting it. This is simpler. config.vm.define :web do |web_config| web_config.vm.box = "lucid32" web_config.vm.forward_port 80, 8080 end web_config.vm.provision :puppet do |puppet| puppet.manifests_path = "manifests" puppet.manifest_file = "lucid32.pp" end...
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Converting Java objects to JSON with Jackson

... object MUST have getters for all fields, wich you want your JSON includes. – Drakonoved Sep 25 '17 at 15:42 add a comment ...
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How to integrate CSS pre-processing within Eclipse? [closed]

...t it's waaaaay better than looking at plain text and you don't need to install a separate editor. You need to associate the .scss file type with the native Eclipse CSS Editor in Eclipse[Part 1]. After you do that, you need to add the .scss file type to the native CSS Editor as well so the CSS Edit...
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What is the difference between concurrent programming and parallel programming?

What is the difference between concurrent programming and parallel programing? I asked google but didn't find anything that helped me to understand that difference. Could you give me an example for both? ...
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What is a callback?

...f you referring to ASP.Net callbacks: In the default model for ASP.NET Web pages, the user interacts with a page and clicks a button or performs some other action that results in a postback. The page and its controls are re-created, the page code runs on the server, and a new version...
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Apache and Node.js on the Same Server

... the ProxyPass directive in the Apache httpd.conf its not too hard to pipe all requests on a particular URL to your Node.JS application. ProxyPass /node http://localhost:8000 Also, make sure the following lines are NOT commented out so you get the right proxy and submodule to reroute http request...
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Does HTTP use UDP?

... Are there any webservers that can be configured to accept connections that aren't TCP? – Spidey Nov 10 '09 at 18:29 1 ...