Download the Echo Client and Server from here. Modify the server to run on a given port and to capitalize input e.g. if client sends "hello" the server should reply "HELLO". You may use any Java methods to do this. We will compile and run it on AFS using Java 8 like this.

$ module unload java18

$ module load java8

$ javac EchoServer.java

$ java EchoServer P ## P - any port between 2000 and 10000

In your EchoServer.java there should be a comment block with your full name, UCID and the URL to your web page on AFS. This file should compile and run as shown above.