コンストラクタ内でthisを使って他のコンストラクタを呼び出す場合、最初の行でなければなりません。 It can be employed to phone recent course techniques and fields, to go an occasion of the current class like a parameter, also to differentiate amongst the local and instance variables. Working with “this” reference can enhance code readability and reduce naming conflicts. Coding variations ... https://javporn19655.blogofoto.com/63349374/5-simple-statements-about-thisav-explained