inner class

基本解释

Make an inner class in the parent class, which is a test case.
在父类中建立一个内部类，这个内部类是个测试用例。
Instance initializers allow you to execute construction code for an anonymous inner class.
实例初始化器允许您为一个匿名内部类执行构造代码。
The code in Listing 1 would be much neater if the anonymous class was placed separately as an inner class.
如果这个匿名类可被作为一个内部类单独放置，那么清单 1 中的代码将会简洁很多。

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