初识java内部类提起Java内部类（Inner Class）可能很多人不太熟悉，实际上类似的概念在C++里也有，那就是嵌套类（Nested Class），关于这两者的区别与联系，在下文中会有对比。-java class category instituted internal Java (Inner Class), many people may not too familiar, in fact similar to the concept, which has C, which is ne