Java平台的投资数据
是否有可用的市场研究数据来计算 Java 平台 的总投资（全球、按地区、按国家）？这可能包括软件（应用程序服务器、IDE、分析工具）、硬件（Sun 服务器、字节码执行处理器）、人员（培训、书籍）、语言开发（Java、Clojure、Scala 等）、公共/私人（大学、 我正在做一个关于 JVM语言
的演示，并想以某种可靠的方式说明 Java 平台上的现有投资是巨大的，并且不会很快消失（想想 Cobol）。我确信这一点对于 IT 人员来说是很清楚的，但我想用一个美元数字来帮助业务人员真正理解这一点。
在评论开始之前，我认识到这个问题位于我们大多数人认为的“编程相关”的边缘。无论如何，了解这些信息可以帮助许多 IT 部门围绕平台的未来进行讨论，甚至可以帮助开发人员做出职业决策。
Are there any market research figures available calculating aggregate investment (worldwide, by region, by country) in the Java platform? This could include software (application servers, IDEs, profiling tools), hardware (Sun servers, bytecode executing processors), personnel (training, books), language development (Java, Clojure, Scala, ..), public/private (universities, governments, corporations), etc.
I'm working on a presentation on JVM languages and would like to illustrate—in some reliable manner—that existing investment in the Java platform is massive and not going anywhere anytime soon (think Cobol). I'm sure this point is clear for IT guys, but I'd like to put a dollar figure on it for the business folks to really drive the point home.
Before the comments start, I recognize that this question is on the outer edge of what most of us consider to be "programming related". Regardless, knowing this information can help many IT department discussions around the future of a platform, and may even assist developers make career decisions.
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Oracle（以前的Sun）显然是第一个开始的地方。他们会很乐意向您宣传 Java 的好处！事实上，他们也是这样看待自己的：
我推荐向他们询问这些数字。如果它们存在，Oracle 将拥有它们。
Oracle (previously Sun) would obviously be the first place to start. They'll be happy to evangelise the benefits of Java to you! In fact, that's how they see themselves:
I recommend asking them for those figures. If they exist, Oracle will have them.
众所周知，此类主题的市场研究是不可靠的 - 主要是因为没有人收集细粒度的数据，因此涉及大量猜测/推断。请记住，花在银行中从事 Java 应用程序的每位编码员和项目经理的工资上的钱从技术上来说是“对 Java 平台的投资”，尽管它远不及 Oracle 或 IBM 或任何其他科技公司的账簿。
我建议尝试从多个不同方向估计投资/活动水平，并对这些进行三角测量以获得明智的视图
以下是您可以使用的一些方法：
Market research on this kind of topic is notoriously unreliable - mainly because nobody collects the data at a granular level so there is a lot of guesswork / extrapolation involved. Remember that money spent on the salaries of every coder and project manager in a bank working on Java applications is technically "investment in the Java platofrm" even though it goes nowhere near the books of Oracle or IBM or any other tech company.
I'd suggest trying to estimate the investment / level of activity from a number of different directions, and triangulate these to come to an informed view
Here's some approaches that you could use: