
Tut12
Authored by Ricardo Keiling
Computers
University
Used 3+ times

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9 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Welchen Rückgabetyp hat die instanceOf Operation?
boolean
den Typ des aufrufenden Objektes
instanceOf gibt nichts zurück (void)
den Typ des zu prüfenden Objektes
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Welche der folgenden Aufrufe ist syntaktisch korrekt?
List<Number> list = new List<Number>();
ArrayList<Number> list = new ArrayList<Integer>();
List<Number> list = new ArrayList<Integer>();
List<Number> list = new ArrayList<Number>();
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Eine ArrayList kann mit 'Integer' typisiert werden, jedoch nicht mit 'int'?
wahr
falsch
weiß ich nicht
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
In einer generischen Klasse kann eine statische Variable den Datentyp des Typeparameter haben?
wahr
falsch
weiß ich nicht
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Welches Schlüsselwort definiert eine Lower-Bound in einer generischen Klasse?
extends
super
lower
upper
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Folgender Aufruf ist syntaktisch korrekt:
List<? super Integer> list = new ArrayList<Object>();
wahr
falsch
weiß ich nicht
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Welche Art von Exception muss behandelt werden?
checked Excpetions
unchecked Exceptions
alle Excpetions müssen behandelt werden
keine Exceptions müssen behandelt werden
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