
Java 2_TDI
Quiz
•
Computers
•
3rd - 12th Grade
•
Practice Problem
•
Hard
mohamed goumih
Used 5+ times
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10 questions
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1.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Combien d’instances de la classe A cr´ee le code suivant?
A x,u,v;
x=new A();
A y=x;
A z=new A();
aucune
cinq
trois
deux
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Le constructeur d’une classe n'a pas de type de retour ?
Vrai
Faux
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
En Java, puis-je hériter de plusieurs classes ?
OUI
NON
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Quel est la différence entre les variables de type longue et de type double
Long définit des entiers et double des nombres en virgule flottante
Long occupe 2 octets et double 4
Long occupe 4 octets et double 8
Double n’existe pas en Java
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pour la classe B d´efinie comme suit:
class B {
public B(){System.out.print(”Ciao”);};
public B(int i) {this(); System.out.println(”Bonjour ”+i);};
}
erreur de compilation
CiaoBonjour 2003
Bonjour 2003
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quelle est la syntaxe correcte pour sortir « Hello World » en Java ?
System.out.println("hello world);
println("hello world);
print("hello world);
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quel est le résultat de la compilation et de l'exécution de la classe suivante ?
?
public class DevInfo
{ int visites = 10;
public static void main(String[] data)
{
int visites = 5;
System.out.print(visites + visites); }
}
Elle ne compile pas
Elle compile mais lève une exception lors de l'exécution.
5
15
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