August 2022
Intermediate to advanced
280 pages
4h 55m
French
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26. Instructions try et exceptions
Une instruction try spécifie un bloc de code susceptible de se voir appliquer des instructions de gestion d’erreurs ou des instructions faisant le ménage. Le bloc try doit être suivi d’un ou plusieurs blocs catch et/ou d’un bloc finally. Le bloc catch s’exécute lorsqu’une erreur est générée dans le bloc try. Le bloc finally s’exécute après la fin de l’exécution du bloc try (ou, le cas échéant, le bloc catch) pour effectuer les instructions de nettoyage, qu’une exception ait été levée ou non.
Un bloc catch a accès à un objet Exception qui contient des informations sur l’erreur. On utilise un bloc catch pour traiter l’erreur ou relancer l’exception. On relance une exception si l’on souhaite simplement consigner ...
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