问题描述
让我们说Java程序定义了A类，它有一个嵌套的静态类'B'。
Lets say a Java program defines the class A, which has a nested static class 'B'.
如何使用Ruby-访问B类是怎样的？ Java Bridge？
How is it possible to access class B using the Ruby-Java Bridge?
例如，这些尝试不起作用：
For example, these attempts do not work:
A = Rjb::import('package.A')
A.B
A::B
有没有办法实现这个目标？
Is there a way to accomplish this?
推荐答案
Google从2006年开始缓存此结果。但听起来很合理，所以接受它并进行实验！
Google cached this result from 2006. Sounds reasonable though, so take it and experiment!
（PS：我是java + ruby用户，但从未使用过Rjb，所以只是传递信息......）
(PS: I'm a java + ruby user, but never used Rjb, so just passing along the info...)
我无法抗拒调查Les访问静态内容的问题，我想我找到了语法。访问内部类（静态或非静态）看起来有点不可思议，但它是可行的。静态加载像任何其他类一样，但它们的路径名是'OuterClass $ StaticInnerClass'。非静态内部类别有点棘手。像静态一样导入'OuterClass $ Inner';现在你有了内部类，但诀窍在于实例化一个实例：你必须提供一个OuterClass实例作为构造函数的第一个参数（因此在java的幕后揭示内部对其外部方法的隐式访问）数据）：
I couldn’t resist investigating the issue Les had with accessing static inners and I think I found the syntax. Accessing inner classes (static or not) can look a little wonky but it is doable. Statics are loaded like any other class, but their pathname is ‘OuterClass$StaticInnerClass’. The nonstatic inner classes are a tiny bit trickier. Import like the static, with ‘OuterClass$Inner’; now you have the inner class, but the trick is in instantiating an instance: you must provide an OuterClass instance as the first argument to the constructor (thus revealing a little behind the curtain of java the implicit access an inner has to its outer’s methods and data):
Outer = Rjb::import(‘Outer’)
Inner = Rjb::import(‘Outer$Inner’)
StaticInner = Rjb::import(‘Outer$StaticInner’)
outer = Outer.new
inner = Inner.new(outer)
staticInner = StaticInner.new
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