
OOP Auditorne5
Flashcard
•
Professional Development
•
University
•
Practice Problem
•
Hard
Wayground Content
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11 questions
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1.
FLASHCARD QUESTION
Front
Što vrijedi za apstraktne klase u Javi? Mogu se instancirati direktno, Ne mogu imati konstruktore, Mogu sadržavati i apstraktne i konkretne metode, Mogu sadržavati samo apstraktne metode
Back
Mogu sadržavati i apstraktne i konkretne metode
Answer explanation
Apstraktne klase ne mogu se instancirati, ali mogu sadržavati i apstraktne (bez tijela) i konkretne metode (s tijelom). Koriste se kao osnova za druge klase.
2.
FLASHCARD QUESTION
Front
Koja je najbolja definicija enkapsulacije (encapsulation)?
Back
Skrivanje detalja implementacije i pristup putem metoda
Answer explanation
Enkapsulacija znači zaštita podataka tako da se pristupa njima preko metoda (npr. get/set), a ne direktno.
3.
FLASHCARD QUESTION
Front
Što će ispisati ovaj kod?
Back
5
Answer explanation
super.broj pristupa varijabli broj iz nadklase A, koja ima vrijednost 5.
Iako B ima vlastitu varijablu broj = 10, ona ne nadjačava već sakriva varijablu iz A.
4.
FLASHCARD QUESTION
Front
Što će se ispisati? Options: true
true, false
false, false
true, true
false
Back
false
true
Answer explanation
== uspoređuje reference (različiti objekti),
.equals() uspoređuje sadržaj (isti tekst).
5.
FLASHCARD QUESTION
Front
Što će ispisati sljedeći kod?
Back
B
Answer explanation
Metoda show() u klasi A je privatna, pa se ne nasljeđuje u klasi B. Metoda show() u B je potpuno nova metoda, a ne nadjačana verzija. Poziv obj.show() poziva metodu iz B.
6.
FLASHCARD QUESTION
Front
Što će ispisati sljedeći kod? Options: X, Y, Greška pri izvođenju, X Y
Back
X
Answer explanation
Statičke metode ne koriste polimorfizam, poziv x.print() koristi tip reference (X), a ne stvarnog objekta (Y).
7.
FLASHCARD QUESTION
Front
Koji modifikator omogućuje pristup unutar istog paketa i iz podklasa (čak i iz drugih paketa)?
Back
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