OOP

Question 1

Constructors

Answer 1

The functions that create new objects

Question 2

Default constructor

Answer 2

The function that is automatically made when you create a class

Question 3

Parameterized constructor

Answer 3

A specific function you make for a class.

Question 4

Constructor Overloading

Answer 4

Creating multiple constructors for a class

Question 5

Inheritance

Answer 5

A child/subclass getting all objects and properties of parent/superclass.

Question 6

Single inheritance

Answer 6

One subclass and one superclass

Question 7

Multilevel Inheritance

Answer 7

A grandfather class, a parent & child class, and a child only class

Question 8

Hierarchial inheritance

Answer 8

Multiple child classes, one parent class

Question 9

Polymorphism

Answer 9

The nature of a child class being able to operate as its parent class

Question 10

Encapsulation

Answer 10

Setting things to public or private, making objects only use their own stuff. Compartmentalisation

Question 11

Abstraction

Answer 11

Making tools within the code, not for the end product.

Question 12

Generalization

Answer 12

Reverse Inheritance, making a class out of the characteristics of other classes

Question 13

Abstract class

Answer 13

A class that isn’t used, only inherited. You must begin with Abstract when making it

Question 14

Abstract method

Answer 14

An unimplemented method with abstract

Question 15

Switch

Answer 15

Like a logical statement, but with many diferent cases. Like what I did with the project for Abba

Question 16

Do While Loop

Answer 16

Like a While Loop, except it always executes once.

Question 17

Enhanced For Loop

Answer 17

A for loop for arrays

Question 18

This()

Answer 18

Refers to the class in a class 
Refers to the method in a method

Question 19

new()

Answer 19

An operator used when making new object

Question 20

super()

Answer 20

refers to the parent class

Question 21

Interface

Answer 21

Like a class; an entirely insubstantiated set of methods

Question 22

Collection

Answer 22

Like an array, but can store different types of items and doesn’t have a set number.

Question 23

ArrayList

Answer 23

Inherits AbstractList. Like an array, but can grow and shrink. Can’t store primitives, needs a wrapper. Slower than an array.

Question 24

Set

Answer 24

A Set is a Collection that cannot contain duplicate elements. It models the mathematical set abstraction.
The Set interface contains only methods inherited from Collection and adds the restriction that duplicate elements are prohibited.

Question 25

Map

Answer 25

The equivalent of a Dictionary in Python

Question 26

Method Overloading

Answer 26

Creating multiple methods with the same names but different parameters

Question 27

Four Pillars of OOP

Answer 27

Inheritance
Polymorphism
Encapsulation
Abstraction

Question 28

Reusability

Answer 28

A mechanism which facilitates reuse of the fields and methods of the existing class when you create a new class. You can use the same fields and methods already defined in the previous class

Question 29

Method Overriding

Answer 29

Creating a new way to use the parent class’s method

Question 30

Array

Answer 30

A collection of primitive data organized with an index. They have a fixed data type and size.

Question 31

Multidimensional array

Answer 31

An array of arrays

Question 32

Static

Answer 32

A keyword that makes a variable fixed, a global variable for all members of that class

Question 33

Getter/accesser

Answer 33

Method that reads info from a private object. Made with public keyword

Question 34

Setter/mutator

Answer 34

Method taht changes a private object. Made with pubic keyword

Question 35

Protected

Answer 35

Only accessible in the same package and subclasses

Question 36

Final

Answer 36

A keyword that makes the method impossible to overide