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();

}

}

}

}