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1package com.company;
2
3import java.io.*;
4import java.net.*;
5
6class Main {
7    public static void main(String argv[]) throws Exception {
8        String clientSentence;
9        String capitalizedSentence;
10        ServerSocket welcomeSocket = new ServerSocket(6789);
11
12        Socket connectionSocket = welcomeSocket.accept();
13        BufferedReader inFromClient =
14        new BufferedReader(new InputStreamReader(connectionSocket.getInputStream()));
15        DataOutputStream outToClient = new DataOutputStream(connectionSocket.getOutputStream());
16        clientSentence = inFromClient.readLine();
17        final String secretKey = "ssshhhhhhhhhhh!!!!";
18        String originalString = "howtodoinjava.com";
19        String encryptedString = Main2.encrypt(originalString, secretKey) ;
20        String decryptedString = Main2.decrypt(clientSentence, secretKey);
21        System.out.println("Received: " + clientSentence);
22        capitalizedSentence = clientSentence.toUpperCase() + 'n';
23        outToClient.writeBytes(capitalizedSentence);
24
25        System.out.println(clientSentence);
26
27        System.out.println(originalString);
28        System.out.println(encryptedString);
29        System.out.println(decryptedString);
30    }
31}