title: How do i have a jar communicate with another jar
body: <p>Ok so i have 2 jars (Console, Core)</p>
  
  <p>1st-Console) receives user input</p>
  
  <p>2nd-Core) processes the input and gives an output</p>
  
  <p>i'm trying to have the two "Communicate" with each other by exchanging input and output</p>
  
  <p>now i have tried writing to a file to communicate when i ran into the problem of "Notifying" the other that there is input to receive and output to give</p>
  
  <p>i'm a bit new to this ideal so if its an easy function, please don't criticize.</p>