title: What is the difference between echo-server and client-server chat application in java?
body: <p>Also I want to know what is main difference between Single Threaded and MultiThreaded Client-Server?
  I want to create a client server chat application.</p>
  
  <p>Server Form consist:
  1 Textarea(text area) (to display text)
  1 sendarea(text area) (to type the text to send)
  1 Send button (to send the text which is typed in sendarea) it sends to client
  1 exit button (closes application)</p>
  
  <p>Client Form consist:
  1 Textarea(text area) (to display text)
  1 sendarea(text area) (to type the text to send)
  1 Send button (to send the text which is typed in sendarea) it sends to server
  1 exit button (closes application)</p>