SocketWithoutNetworkExample

SocketWithoutNetworkExample -- communicating across a socket using the "loopback" address.

This class manages a server socket listening on port 7834, and its partner class, ClientWithoutNetwork, runs a client for that server socket.

To see this example in action:

Compile the Java source file, SocketWithoutNetworkExample.java:
```
	javac SocketWithoutNetworkExample.java
```
Run the server socket class in one command-line shell:
```
	java SocketWithoutNetworkExample
```
Run the client socket class in a different command-line shell:
```
	java ClientWithoutNetwork
```
Run a second client socket after the first one completes:
```
	java ClientWithoutNetwork
```