File list (Check if you may need any files):
UDP
...\classes
...\src
...\...\UDPEchoClient.java
...\...\UDPEchoClientFrame.java
...\...\UDPEchoServer.java
...\...\UDPEchoServerFrame.java
...\src_udpechoclient.txt
...\src_udpechoserver.txt
...\UDPEchoClient.class
...\UDPEchoClient.jcd
...\UDPEchoClient.jcp
...\UDPEchoClient.jcu
...\UDPEchoClient.jcw
...\UDPEchoClientFrame$1.class
...\UDPEchoClientFrame$2.class
...\UDPEchoClientFrame.class
...\UDPEchoServer.class
...\UDPEchoServer.jcd
...\UDPEchoServer.jcp
...\UDPEchoServer.jcu
...\UDPEchoServer.jcw
...\UDPEchoServerFrame$1.class
...\UDPEchoServerFrame$2.class
...\UDPEchoServerFrame.class