Pre-format message sending telegram via link

Prequesition:

Create a Telegram public channel
Create a Telegram BOT via BotFather
Set the bot as administrator in your channel

Provided that you did the above, now you can send a message to your channel by issuing an HTTP GET request to the Telegram BOT API at the following URL:

https://api.telegram.org/bot[BOT_API_KEY]/sendMessage?chat_id=[MY_CHANNEL_NAME]&text=[MY_MESSAGE_TEXT]

BOT_API_KEY is the API Key generated by BotFather when you created your bot
MY_CHANNEL_NAME is the handle of your channel (e.g. @my_channel_name)
MY_MESSAGE_TEXT is the message you want to send (URL-encoded)

Now let’s se how to do this in different languages the easy way.

PHP

$apiToken = "my_bot_api_token";

$data = [
    'chat_id' => '@my_channel_name',
    'text' => 'Hello world!'
];

$response = file_get_contents("https://api.telegram.org/bot$apiToken/sendMessage?" . http_build_query($data) );// Do what you want with result

JAVA

String urlString = "https://api.telegram.org/bot%s/sendMessage?chat_id=%s&text=%s";

String apiToken = "my_bot_api_token";
String chatId = "@my_channel_name";
String text = "Hello world!";

urlString = String.format(urlString, apiToken, chatId, text);

URL url = new URL(urlString);
URLConnection conn = url.openConnection();

StringBuilder sb = new StringBuilder();
InputStream is = new BufferedInputStream(conn.getInputStream());
BufferedReader br = new BufferedReader(new InputStreamReader(is));
String inputLine = "";
while ((inputLine = br.readLine()) != null) {
    sb.append(inputLine);
}
String response = sb.toString();
// Do what you want with response