checked exception
present participle of trilerp
(fantasy) An intelligent man-sized lizard who walks on hind legs and speaks and dresses similar to humans.
present participle of updive
(programming) An exception that has to be declared in the signature of the method that may raise it.
FileReader.open はメソッドのシグネチャで宣言しなければならない例外を投げる可能性があるため、それをキャッチするかメソッドの宣言で指定する必要があります。
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