Static Nested Classes

• Static nested classes are inner classes marked with the static modifier.
• A static nested class is not an inner class, it's a top-level nested class.
• Because the nested class is static, it does not share any special relationship with an instance of the outer class. In fact, you don't need an instance of the outer class to instantiate a static nested class. 
• Instantiating a static nested class requires using both the outer and nested class names as follows: BigOuter.Nested n = new BigOuter.Nested();
• A static nested class cannot access non-static members of the outer class, since it does not have an implicit reference to any outer instance (in other words, the nested class instance does not get an outer this reference).