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什么是“$ {}”的名称，我在哪里可以找到NetBeans IDE的文档？

[英]What is the name of “${}” and where can I find documentation on them for NetBeans IDE?

原文 2015-09-11 23:13:29 5 2 java/ netbeans

I just started using the NetBeans IDE and in poking around i have seen ${ some code here } (eg ${user} or ${package} ), especially in templates, seemingly as a manner of pulling information from another source. 我刚刚开始使用NetBeans IDE并且在我周围看到$ { some code here }（例如${user}或${package} ），特别是在模板中，似乎是从另一个来源提取信息的方式。

I do not know what the terminology is for these, the closest I can find are code hints or code templates but those do not seem to be the same as these. 我不知道这些术语是什么，我能找到的最接近的是代码提示或代码模板，但那些似乎与这些不一样。 Because I do not know what to call them, I do not know how to find more information on them. 因为我不知道该怎么称呼它们，所以我不知道如何找到它们的更多信息。 Specifically I want a list of all of these "shortcodes" supported by or built into the NetBeans IDE and what they "point" to. 具体来说，我想要一个NetBeans IDE支持或内置的所有这些“短代码”的列表以及它们“指向”的内容。

2 个解决方案

Credit for this answer goes to WillShackleford. 这个答案归功于WillShackleford。 He posted the link in a comment which allowed me to get all the information I was looking for. 他在评论中发布了这个链接，这让我可以获得我想要的所有信息。

They are called template variables. 它们被称为模板变量。 They are part of the implementation of the FreeMarker Template Language, specifically they are Interpolations, in the NetBeans IDE. 它们是NetBeans IDE中FreeMarker模板语言实现的一部分，特别是它们是Interpolations。

Information about them can be found at: 有关它们的信息可在以下位置找到：
http://wiki.netbeans.org/FaqTemplateVariables http://wiki.netbeans.org/FaqTemplateVariables
http://freemarker.org/docs/dgui_template_valueinsertion.html http://freemarker.org/docs/dgui_template_valueinsertion.html

General information regarding the FreeMarker Template Language and its use in the NetBeans IDE can also be found at the above links. 有关FreeMarker模板语言及其在NetBeans IDE中的使用的一般信息也可以在上面的链接中找到。

The dollar sign is related to the anonymous inner class. 美元符号与匿名内部类有关。 You can check this answer 你可以查看这个答案