如何从程序中找到JVM版本？(How to find the JVM version from a program?)

 http://www.mail-archive.com/users@maven.apache.org/msg90985.html上的电子邮件交换说： 
 
 “ 这是所有的理论...也许在编写文档时，有人涉及到Maven开发，认为有一个src / main / config目录可能是有用的，因此它被包含在文档中，但由于它从未在代码中实现今天没有被使用。 “ 
 
 和 
 
 “ 目录 [src / main / config] 不会显示在类路径上，所以应用程序或测试类不能读取任何内容。 
 
 所以只需使用src/main/resources 。 
 
 注意：我不知道这是否是真的（我是问题提问者），但这将解释为什么这么多人在网络上推荐用于log4j.properties的src/main/resources 。 如果人们同意这是正确的答案，你可以让我知道（评论或投票）我把它放在这里，以拯救别人打字。 

The email exchange at http://www.mail-archive.com/users@maven.apache.org/msg90985.html says: 
 
"This is all theory... Perhaps while writing the docs, someone involved with Maven development thought it might be useful to have a src/main/config directory and so it was included in docs, but since it was never implemented in the code, it is not being used today."
 
and
 
"The directory [src/main/config] doesn't show up on the classpath so the application or test classes can't read anything in it."
 
So just use src/main/resources.
 
Note: I don't know if this is true (I'm the question asker), but that would explain why so many people on the web recommend src/main/resources for log4j.properties. If people agree this is the right answer could you let me know (comment or vote) I put it here to save other people the typing.