tcpclient.java

TCP/IP服务器端与客户端 你可以通过此建立一个TCP服务端

import java.io.*;
import java.net.*;
class TCPClient 
{
	public static void main(String argv[]) throws Exception
	{
		String sentence;
		String modifiedSentence;
		BufferedReader inFromUser =
		new BufferedReader(new InputStreamReader(System.in));
		Socket clientSocket = new Socket("127.0.0.1", 6789);
		DataOutputStream outToServer =
		new DataOutputStream(clientSocket.getOutputStream());
		BufferedReader inFromServer =
		new BufferedReader(new
		InputStreamReader(clientSocket.getInputStream()));
		sentence = inFromUser.readLine();
		outToServer.writeBytes(sentence + '\n');
		modifiedSentence = inFromServer.readLine();
		System.out.println("FROM SERVER: " + modifiedSentence);
		clientSocket.close();
	}
}