Description: This program is based on network communication program TCP/IP protocol, the use of Java streams, files, and other multi-threaded programming techniques. Socket object plays an important role in network programming, the program is written in a simple socket-based chat tool technology. Input and output streams chat are used BufferedReader and PrintWriter, the server for the client to start a thread in the thread through the socket and customers to exchange information. When sending a chat message to the server: " Hello" , the server would like this thread output stream to write information: " Hello" , then the client socket input stream is read to this message. File transfer files sent and received document is divided into two parts, when the client would like the server to send the file, byte input stream FileInputStream first call to read the file you want to send from the machine, then the information output by the byte stream BufferedOutputStream sent to the client, s
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QQ.java
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