I recently started to code some Solidity, and there are some syntax expressions in the language (e.g payable function) that you wouldn't find in other languages

I recently started to code some Solidity, and there are some syntax expressions in the language (e.g payable function) that you wouldn't find in other languages because they don't deal with those concepts. Could you have used a modified version of Java or simply embed those concepts in a library, probably. I guess they wanted a specialized language.