Exercises

Exercise 1: Hello Actor

Task: Create an actor named HelloActor that receives a String message and prints out Hello, [message]!.

Exercise 2: Counter Actor

Task: Implement a CounterActor that can receive messages to increment, decrement, and print its internal count.

Exercise 3: Ping-Pong Actors

Task: Create two actors, PingActor and PongActor. PingActor should send a ping message to PongActor, and PongActor should respond with a pong message.