Command Pattern: Restaurant Example

command_pattern_restautant_example.java

// Client
class Customer {
    // places an order (requesting a command)
}

// Command
class Order {
    // waiter places this
}

// Command
class Refund {
    // manager fulfills this
} 

// Invoker
class Waiter {
    // writes the order on a notepad (queuing the order)
} 

// Receiver
class Chef {
    // cooks the orders in the queue
}

// Receiver
class Manager {
    // Fulfills the customers request
} 

It will be nice to have an main class that piece them all together to provide a sample working example