Long question on Android

inti = 11818518518518581; I know that this should be corrected to long. So I know that you have to put an L after long i = 11818518518518581L to recognize it as long.

But now longi = arraylist.get(arraylist.size()-1)-1).You can get the id value of i by doing id, but the id value is 11818518518581. I don't think it's recognized as long because there's no "L" in the back. What should I do? <

jsonObject.put("aaa", 11818518518518581L) results in a value, but jsonObject.put("aaa", i) results in a value ㅜ <