3rd Lab Assignment

You'll have to use the Observer and Mediator patterns today.

• You'll have to create at least 3 types of resources. These resources should be generated in random intervals.
• Create Objects that observe resources and when there are enough resources generated, they harvest them and produce a component. This process should take random time (200-3000 ms).
  
• Producers should be observed by a CentralOffice (a Mediator). When components are ready, the main factory should be ordered to assemble the product.
• Each object should run in a separate thread.
• The CO observes the main factory as well.
• When there is a product ready, the factory should notify it's observers.
  
• When there are 13 products, the CentralOffice should shut down all threads and exit the program.