发送数据

public class sendmessage {public static void main (String[] args) throws IOException {//创建socket对象//在创建的同时会连接服务器,若连接不上,代码会报错Socket socket=new Socket("127.0.0.1",10086);//从连接通道中获取输出流OutputStream os=socket.getOutputStream();//写出数据os.write("aaa".getBytes());//释放数据os.close();socket.close();}
}

接收数据

public class receivemessage {public static void main (String[] args) throws IOException {//创建ServerSocket对象ServerSocket ss=new ServerSocket(10086);//监听客户端的连接Socket socket=ss.accept();//从连接通道中获取输入流读取数据//若想获取中文, 可将下句改为              //InputStreamReader isr=new InputStreamReader(socket.getInputStream());InputStream is=socket.getInputStream();int b;while ((b=is.read())!=-1){System.out.print((char) b);}//释放资源socket.close();ss.close();}
}

要先运行接收端再运行发送端,否则无法收到数据

初学者，见解不足，如有错误请指出