Compare Message-Driven Bean with Active Index Cell

Similarity:

• Both Message-Driven Bean and Index Cell are software components that can consume and process messages.
• A message bean can communicate with another message bean by sending message, also a IC can send message to another IC
• Both message bean and IC can invoke methods to do an action.

Difference:

• In a valid lifecycle, IC can change its state by receiving messages, while a message bean does not have a state during alive.