Java list if exists
- Java list remove if exists
- Java list get if exists
- Java list replace if exists
- Java list get index if exists
- Java list remove element if exists
- Java list get first if exists
- Java list add if not exists
- Java list check if index exists
- Java list check if value exists
- Java list check if object exists
- Java list check if string exists
- Java list check if element exists stream
- Java list add only if not exists
- Java list add element if not exists
- Java list string add if not exists