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Fichier Détails
| Cartes-fiches | 83 |
|---|---|
| Langue | English |
| Catégorie | Informatique |
| Niveau | Autres |
| Crée / Actualisé | 02.05.2019 / 03.05.2019 |
| Lien de web |
https://card2brain.ch/box/20190502_ocp_before_exam
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is it safe to use inputsream.available() to check if a stream is EOF?
NO! Use the specific strategies for each kind of stream
How is a serialized object created?
- Java calls the first non-arg constructor for the first nonserializable parent class, skipping the constructors of all serialized classes in between!
- Static variables are ignored
- default intializers (eg private String myField = "123" and {}) are ignored
What is special about the print, println, printf and format methods found on the PrintStream/PrintWriter classes?
They do not throw an exception! The checkError() method can be used for that instead
