java学习之利用TCP实现的简单聊天示例代码

public class SendDemo {
 public static void main(String[] args) throws Exception{
 Socket socket= new Socket(InetAddress.getLocalHost(),8888);
 SendImpl sendImpl= new SendImpl(socket);
 //发送的线程
 new Thread(sendImpl).start();
 //接收的线程
 ReciveImpl reciveImpl=new ReciveImpl(socket);
 new Thread(reciveImpl).start();
 }
}

public class ServerDemo {
 public static void main(String[] args) throws Exception {
 ServerSocket serverSocket =new ServerSocket(8888);
 Socket socket=serverSocket.accept();
 SendImpl sendImpl= new SendImpl(socket);
 new Thread(sendImpl).start();
 ReciveImpl reciveImpl=new ReciveImpl(socket);
 new Thread(reciveImpl).start();
 }
}

public class SendImpl implements Runnable{
 private Socket socket;
 public SendImpl(Socket socket) {
 this.socket=socket;
 // TODO Auto-generated constructor stub
 }
 @Override
 public void run() {
 Scanner scanner=new Scanner(System.in);
 while(true){
  try {
  OutputStream outputStream = socket.getOutputStream();
  String string= scanner.nextLine();
  outputStream.write(string.getBytes());
  } catch (IOException e) {
  // TODO Auto-generated catch block
  e.printStackTrace();
  }
 }
 }
}

public class ReciveImpl implements Runnable {
 private Socket socket;
 public ReciveImpl(Socket socket) {
 this.socket=socket;
 // TODO Auto-generated constructor stub
 }
 @Override
 public void run() {
 while(true ){
  try {
  InputStream inputStream = socket.getInputStream();
  byte[] b=new byte[1024];
  int len= inputStream.read(b);
  System.out.println("收到消息："+new String(b,0,len));
  
  } catch (IOException e) {
  // TODO Auto-generated catch block
  e.printStackTrace();
  }
 }
 }
}