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 get in touch with present course strategies and fields, to pass an instance of the current course to be a parameter, and to differentiate concerning the neighborhood and instance variables. Utilizing “this” reference can boost code readability and lower naming conflicts... https://gunnerlifbv.develop-blog.com/38845213/the-2-minute-rule-for-thisav