Java Help: You are given the following part of a networked client java program:

public static void main(String[] args) throws IOException {

Socket s = new Socket("localhost", 9999);

OutputStream outstream= s.getOutputStream();

PrintWriter out = new PrintWriter(outstream);

String request = "APPEND " + args[0] + " ";

out.print(request);

out.flush();

out.close(); s.close();

}

Create a socket-based server java program which can interact with the given client as follows:

The client sends a single message of the form APPEND x to the server (where x is obtained from the command line. Assume character does not occur in x). The server shall then append string x as a new element to a global, initially empty, list in memory. Use a static field with an appropriate data type for representing the global list. Your server should allow multiple clients to interact with it one after another (i.e., after the server has finished dealing with the first client, a second client can connect, and so on), but your server is not required to be able to interact with multiple clients simultaneously. Do not complete or modify the given client code