Socket communication

python The sender

from socket import *
serverName = '*.*.*.*'
serverPort = *
clientSocket =socket(AF_INET,SOCK_STREAM)    #  establish socket

clientSocket.connect((serverName,serverPort))    #  Connect 

sentence = input('Input->:')    # Enter the data to be transmitted 

clientSocket.send(sentence.encode("utf8"))    # Send... To the receiving end 

clientSocket.close()　# Close socket bytes 

python The receiver

import socket
 
#  establish socket
tcp_server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
 
#  Local information 
address = ('',702)
 
#  binding 
tcp_server_socket.bind(address)
tcp_server_socket.listen(128)
 
print(' Start server listening ')
 
while True:
    #  Waiting for a new client connection 
    client_socket, clientAddr = tcp_server_socket.accept()
    while True:
        #  Receive the data sent by the other party 
        recv_data = client_socket.recv(1024)  #  receive 1024 Bytes 
        if recv_data:
            print(' The received data is :', recv_data.decode('utf8'))
        else:
            break
    client_socket.close()
 
tcp_server_socket.close()

java The receiver

import java.io.IOException;
import java.io.InputStreamReader;
import java.io.Reader;
import java.net.ServerSocket;
import java.net.Socket;
 
public class test {
 
	       public static void main(String args[]) throws IOException {
	          // For the sake of simplicity , All the abnormal information is thrown out 
	          int port = 702;
	          // Define a ServerSocket Listen on the port 
	          ServerSocket server = new ServerSocket(port);
	          System.out.println("start");
	          //server Try to receive other Socket Connection request for ,server Of accept The method is blocked 
	          Socket socket = server.accept();
	          // After establishing a connection with the client , We can get it socket Of InputStream, And read the information sent by the client .
	          Reader reader = new InputStreamReader(socket.getInputStream());
	          int len;
                  int k=1;
	          StringBuilder sb = new StringBuilder();
	          while (k>0 ) {
       		     char chars[] = new char[60]; 
                     len=reader.read(chars);
                     System.out.println(chars);
                     System.out.println("-----------------");
	          }
	          reader.close();
	          socket.close();
	          server.close();
	       }
	       
	    
}