p1
..\ip
..\..\IPDemo.java
p2
..\udp
..\...\UDPReceiveDemo.java
..\...\UDPReceiveDemo2.java
..\...\UDPSendDemo.java
..\...\UDPSendDemo2.java
p3
..\chat
..\....\ChatDemo.java
..\....\Receive.java
..\....\Send.java
p4
..\tcp
..\...\ClientDemo.java
..\...\ServerDemo.java
p5
..\tcptest
..\.......\TextTrans.java
..\.......\TransClient.java
..\.......\TransServer.java
p6
..\uploadtext
..\..........\UploadClient.java
..\..........\UploadServer.java