Which coding language I should use to programe arduino

Answer 1

c/c++

Answer 2

It mainly support C/C++ mostly low level but it doesn't mean you can't use another programming language, you can however the main problem here is arduino is "Microchip" which has over 2k sram that is far least which jvm or python interpreter can afford so it would be so difficult to use another language unless you want to setup another board or convert single code to native
Choose your best 😉