2023-romanian

How do you declare and instantiate a vector(array) of 10 integers in Java

• Int a[10]

• Int[] a = new int[10]

• Int[] a = new int[9]

• Int[] a

Which of the following are methods for code reusability

• Aggregation

• Inheritance

• Composition

• Polymorphism

Which of the following are OOP concepts

• Agregation

• Inheritance

• Composition

• Polymorphism

How are variables declared by default in an interface

• Private

• Public

• Static

• Final

Dynamic polimorfism is based on

• Multifunctions

• Aggregation

• Composition

• Inheritance

Which of the following are access specifiers

• Public

• Protected

• Final

• Blocked

What is the role of “this” keyword

• Refers the current object

• Declares a class variable

• Refers the constructor of the base class

• Helps access the common interface of objects

What is the role of “super” keyword

• Refers the current object

• Calls base class members

• It is used to declare super-classes

• Helps access the common interface of objects

What is understood from “method overloading”

• Code sequence that forces the processor

• Multiple methods with the same name but different parameters

• Forcefully modifying static variables

• Modifying an inherited method

What is the symbol for protected in a UML diagram

• #

• ~

• -

• +