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This process is described in detail in the documentation linked to above.
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It's very easy to register a bot on Telegram. I hope that the above has helped clarify what I'm going to write about. The possibilities are limited only by your imagination. You can bind a database, execute various API requests, parse websites, perform complex calculations, and more. Our bot is a full-fledged web application. But the fact is, most of the bots created provide reference information and the like. There are a lot of websites where you can create your own easily deployable bot. But, I didn't find a complete, exhaustive guide for Java bot development. After spending a lot of time searching, I've found tidbits of knowledge on bot development, for example, how to make a keyboard, handle a CallbackQuery, and so forth.
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It seems we can just write code and rejoice! But it's not so simple. Everything there is very accessible and clear.
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