
Întrebări despre Colecții în Java
Authored by Rolland Gavriliță
Computers
Professional Development
Used 1+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Care dintre următoarele implementări ale interfeței List este sincronizată?
ArrayList
LinkedList
Vector
ArrayDeque
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Ce caracteristică definește o colecție de tip Set?
Permite elemente duplicate
Menține ordinea de inserare
Nu permite elemente duplicate
Este o colecție indexată
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Ce metodă este folosită pentru a adăuga un element într-un HashMap?
add()
put()
insert()
append()
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Ce implementare a interfeței Map permite accesul rapid la elemente pe baza cheii?
HashMap
TreeMap
LinkedHashMap
ConcurrentHashMap
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Ce se întâmplă când adăugăm un element duplicat într-un HashSet?
Elementul este adăugat
Se aruncă o excepție
Elementul este ignorat
Se suprascrie elementul existent
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Ce tip de colecție este cel mai potrivit pentru a stoca perechi cheie-valoare?
List
Set
Map
Queue
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Care dintre următoarele implementări ale interfeței Set este optimizată pentru enum-uri?
HashSet
TreeSet
EnumSet
LinkedHashSet
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