The only string in the list is "Java". If you search for "PHP" from here, the return value is null. The original code for this exercise returns null only when nothing is found. What the caller wants ...
An array in Java is a container object that holds a fixed number of values of a single type. The length of an array is established when the array is created and cannot be changed.
買い物リストを残したまま、別の候補を作って品物を入れ替えたい。そんな場面を、Listという「一覧を扱う入れ物」で試します。商品名の一覧を受け取り、同じ内容と順番の、編集用の一覧 ...
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