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I have problem with this part of the code

private char encryptChar(char c, int shift) {
         if (Character.isLetter(c))
            return (char) ('A' + (c - 'A' + shift) % 26);
         else
            return c;
      }

      private String encryptMessage(String msg, int shift) {
         String result = "";

         for (int i = 0; i < msg.length(); i++)
            result += encryptChar(msg.charAt(i), shift);
         return result;
      }

and for encoding and decoding

 if (clientMsg.equals("ENCRYPT"))
               {
                  System.out.println("Enkript");
                  opw.println("OK"); // send ok to client
                  opw.flush();


                  // take the message from the server and send it back

                  String text = br.readLine();
                  System.out.println(text);
                  int shiftmsg = 26 - moving;
                  opw.println(encryptMessage(text, shiftmsg)+"\n"); // return encrypted message to server
                  opw.flush();

               }
               else if (clientMsg.equals("DECRYPT"))
               {
                  System.out.println("DEKRzpt");
                  opw.println("OK");
                  opw.flush();

                  // take the message fom the server and send it back
                  String text = br.readLine();
                  System.out.println(text);

                  opw.println(encryptMessage(text, 26-moving)+"\n"); // return decrypted message to server
                 // //opw.println("OK");
                  opw.flush();

It works in most occasions, but when I enter send text and I decrypt it I get MEND TEXT

Can you help me with this?

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