Classes and Interface

Rule 7: Design interfaces for posterity

Using interface to define constants in exposing the internal values of class being used. Instead of this Following can be done:

1. 1.Use non-instantiable class(private constructor) with public static values.
   1. Note: You can use static imppport to avoid class.CONSTANT calling convention.
2. if the constants are [enumerated type] put the CONSTANT in enum
3. if the constants are specific to class put it into the CLASS or Interface itself