Submission instructions 
In a directory hw2 include:
-  Bank, ATM and Router code as well as their compiled versions.
Code should be compiled with the javac compiler on your grace account.
 -  Files Alice.card and Bob.card
 -  Files AlicePIN.txt and BobPIN.txt
 -  Your design document
 -  A README file including the  Name, UID and Grace username  of the
members of your team.
 
Create an archive by running the following command from the directory containing
 hw2 : 
         gtar czvf hw2.tar.gz hw2 
Then submit the archive through the submit script: 
         submit 2008 spring cmsc 414 0101 2 hw1.tar.gz 
-   1. The stub code for the Bank blocks awaiting input from 
stdin but it needs to handle requests from the ATM through the socket.
How do we do this? 
 -  This will have to be handled with threads which the stub code for
the bank does not incorporate. Please modify the Bank code accordingly.