I need help running this code. I keep getting errors showing *missing classes* issues and cannot find symbol. These are the Java codes:

import java.util.Date; public class Factory { public static void main(String args[]) { // creates the message queue

Channel queue = new MessageQueue();

// Creates the producer and consumer threads and pass

Thread producer = new Thread(new Producer(queue)); Thread consumer = new Thread(new Consumer(queue)); // start the threads producer.start(); consumer.start(); } }

import java.util.Date;

class Producer implements Runnable { private Channel queue;

public Producer(Channel queue) { this.queue = queue; } public void run() { Date message;

while (true) { // nap for awhile SleepUtilities.nap(); // produces an item and enter it into the buffer message = new Date(); System.out.println("Producer produced " + message); queue.send(message); } } }

import java.util.Date;

class Consumer implements Runnable { private Channel queue; public Consumer(Channel queue) { this.queue = queue; } public void run() { Date message; while (true) { // nap for awhile SleepUtilities.nap(); // consumes an item from the buffer message = queue.receive(); if (message != null) System.out.println("Consumer consumed " + message); } } }