package?com.jwy.bb;

import?java.io.BufferedReader;
import?java.io.BufferedWriter;
import?java.io.IOException;
import?java.io.InputStreamReader;
import?java.io.OutputStreamWriter;
import?java.net.Socket;
import?java.net.UnknownHostException;

public?class?SocketClient?{

	public?static?void?main(String[]?args)?{
		SocketClient?client=new?SocketClient();
		client.start();
	}
	public?void?start(){
		Socket?socket=null;
		BufferedWriter?writer=null;
		BufferedReader?reader=null;
		BufferedReader?inputReader=null;
		
		try?{
			socket=new?Socket("127.0.0.1",9898);
			writer=new?BufferedWriter(new?OutputStreamWriter(socket.getOutputStream()));
			reader=new?BufferedReader(new?InputStreamReader(socket.getInputStream()));
			inputReader=new?BufferedReader(new?InputStreamReader(System.in));
			String?inputContent;
			String?receiveMsg;
			while((inputContent=inputReader.readLine())!=null){
				writer.write(inputContent+"\n");
				writer.flush();
			}
			while((receiveMsg=reader.readLine())!=null){
				System.out.println(receiveMsg);
			}
		}??catch?(IOException?e)?{
			//?TODO?Auto-generated?catch?block
			e.printStackTrace();
		}
		finally{
			try?{
				inputReader.close();
				reader.close();
				writer.close();
				socket.close();
			}?catch?(IOException?e)?{
				//?TODO?Auto-generated?catch?block
				e.printStackTrace();
			}
		}
	}

}

package com.jwy.aa;

import java.io.BufferedInputStream;

import java.io.BufferedReader;

import java.io.BufferedWriter;

import java.io.IOException;

import java.io.InputStreamReader;

import java.io.OutputStreamWriter;

import java.net.ServerSocket;

import java.net.Socket;

import com.sun.imageio.spi.OutputStreamImageOutputStreamSpi;

public class SocketServer2 {

public static void main(String[] args) {

SocketServer2 socketserver2=new SocketServer2();

socketserver2.start();

}

public void start(){

ServerSocket socketserver=null;

Socket socket=null;

BufferedReader reader=null;

BufferedWriter writer=null;

BufferedReader inputContent=null;

try {

socketserver=new ServerSocket(9898);

System.out.println("server...");

socket=socketserver.accept();

System.out.println("server"+socket.hashCode()+"connection");

inputContent=new BufferedReader(new InputStreamReader(System.in));

reader=new BufferedReader(new InputStreamReader(socket.getInputStream()));

// writer=new BufferedWriter(new OutputStreamWriter(socket.getOutputStream()));

String receiveMsg;

String inputcontent;

while((inputcontent=inputContent.readLine())!=null){

writer.write(inputcontent+"\n");

writer.flush();

}

while((receiveMsg=reader.readLine())!=null)

{

System.out.println(receiveMsg);

}

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

finally{

try {

reader.close();

socket.close();

writer.close();

inputContent.close();

socketserver.close();

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

}

}