echoclient.java

《Java TCP/IP应用开发详解》的部分源程序,开发环境为ECLIPSE3.1

package section15;

import java.io.*;

import java.net.*;

public class EchoClient {

	/**
	 * @param args
	 */
	public static void main(String[] args)throws IOException {
		Socket clientSocket=null;
		PrintWriter out=null;
		BufferedReader in=null;
		try{
			clientSocket=new Socket("localhost",1110);
			out=new PrintWriter(clientSocket.getOutputStream(),true);
			in=new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
		    
		}catch(UnknownHostException e)
		{
			System.err.println("Don't know about host:localhost");
		    System.exit(1);
		    
		}
		System.out.println(in.readLine());
		System.out.println(in.readLine());
		BufferedReader standardIn=new BufferedReader(new InputStreamReader(System.in));
		String userstr=null;
		while((userstr=standardIn.readLine())!=null)
			{
			out.println(userstr);
			System.out.println(in.readLine());
			}
		out.close();
		in.close();
		clientSocket.close();
		
	}

}