Benefit

• to pretect access to the encapsulated (hidden) data or operation
• Increased modularity.

Language Specific

• Most languages like Java have a "protection type" that can be applied to data and operations.
• Publish access operations so users of a class are encoraged to use these and not directly/access data.
  • getX(), setX() operations.

In Java: Can do information hidding with protection type declarations of private, public, protected, package protected.