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In Hibernate Validator 4.1+, what is the difference between @NotNull, @NotEmpty, and @NotBlank?
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How to set up a git project to use an external repo submodule?
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POST request send json data java HttpUrlConnection
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在 App Inventor 2 中使用图像 · App Inventor 2 中文网
...needed; you want to resize to “just the right size.”
You can also use services like Google image search to find images for your app that are already the right size, so you don’t need to rescale them.
Keep in mind that image size refers to the size (height and width) in pixels. You can fin...
git produces Gtk-WARNING: cannot open display
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How do you commit code as a different user?
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Android Task Affinity Explanation
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XmlWriter to Write to a String Instead of to a File
I have a WCF service that needs to return a string of XML. But it seems like the writer only wants to build up a file, not a string. I tried:
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Is it possible to select the last n items with nth-child?
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Cannot make a static reference to the non-static method
...and in order to call it, one needs an instance of it's subclass (Activity, Service, Application or other). The problem is, that the public static final variables are initialized before any instance of Context is created.
There are several ways to solve this:
Make the variable a member variable (...