Can be particularly useful when ...

• There is no reason for an object of the local class to exist in the absence of an object of the enclosing class
• There is no reason for an object of the local class to exist outside a method of the enclosing class
• Methods of the object of the local class need access to members of the object of the enclosing class
• Methods of the object of the local class need access to final local variables and method parameters belonging to the method in which the local class is defined