Java: XMLRPC

Client.java

try(BufferedReader br = new BufferedReader(new FileReader("file.txt"))) {
        StringBuilder sb = new StringBuilder();
        String line = br.readLine();

        while (line != null) {
            sb.append(line);
            sb.append(System.lineSeparator());
            line = br.readLine();
        }
        String everything = sb.toString();
    }

Server.java

import org.apache.xmlrpc.*;

public class JavaServer {

    public Integer sum(int x, int y) {
        return new Integer(x + y);
    }

    public static void main(String[] args) {
        try {

            System.out.println("Attempting to start XML-RPC Server...");
            WebServer server = new WebServer(80);
            server.addHandler("sample", new JavaServer());
            server.start();
            System.out.println("Started successfully.");
            System.out.println("Accepting requests. (Halt program to stop.)");
        } catch (Exception exception) {
            System.err.println("JavaServer: " + exception);
        }
    }
}