There are two other differences from the equivalent TCP/IP code that are worth

noting, both concerning the possible exceptions that may be generated:

• the IOException in main is replaced with a SocketException

• there is no checked exception generated by the close method in

the finally clause, so there is no try block.

Now for the code...

//Server that echoes back client s messages.

//At end of dialogue, sends message indicating number of

//messages received. Uses datagrams.-There are two other differences from the equivalent TCP/IP code that are worth

noting, both concerning the possible exceptions that may be generated:

•　the IOException in main is replaced with a SocketException

•　there is no checked exception generated by the close method in

the finally clause, so there is no try block.

Now for the code...

//Server that echoes back client s messages.

//At end of dialogue, sends message indicating number of

//messages received. Uses datagrams.