Java nested classes and inner classes

You can define another class within one class, which is called a nested class (nested classes), and it has two types: static nested classes and non-static nested classes. Static nested classes use little, and most importantly, non-static nested classes, also known as inner classes (inner). Nested classes are introduced from JDK1.1. Among them, the inner class can be divided into three kinds:
One, the inner class directly defined in a class (outer class);
Second, the inner class defined in a method (the method of the outer class);
Its third, anonymous inner class.

Java nested class (Nested Classes) Summary

Http://www.cnblogs.com/aigongsi/archive/2012/04/24/2467183.html

The use of the class name.

http://blog.csdn.net/nullreference/article/details/7746822

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Java nested classes and inner classes