Prac-Theory

Question 1

Define static

Answer 1

indicates that a particular member is not an instance, but rather part of a type

Question 2

Define parallel arrays

Answer 2

More than one array with the same number of elements where the elements of all the arrays with the same index, are related.

Question 3

What is an access modifier

Answer 3

Defines who can use a method or variable in a class.

private: Only the same class can use it.
public: Anyone can use it.

Question 4

Accessor

Answer 4

A method that lets you read the value of a private variable.

Question 5

Attribute

Answer 5

The data or properties that belong to an object (also called fields or properties).

Question 6

Class

Answer 6

A template used to create objects. It defines the data (attributes) and actions (methods) the object will have.

Question 7

Constructor

Answer 7

A special method that creates an object and sets its starting values. It has the same name as the class.

Question 8

Encapsulation

Answer 8

Keeping data (fields) and related actions (methods) together in one class, and hiding the details from other parts of the program.

Question 9

Helper Method

Answer 9

A private method used inside a class to do small tasks like calculations. It’s not meant to be used outside the class.

Question 10

Information Hiding

Answer 10

Keeping an object’s data private and only allowing access through specific methods like get and set.

Question 11

Inheritance

Answer 11

When a class (child) gets methods and attributes from another class (parent), so you can reuse code.

Question 12

Instantiation

Answer 12

The process of creating an object from a class

Question 13

Methods

Answer 13

Actions or behaviors that objects can perform. For example, an object might have a method to calculate something or display a value.

Question 14

Mutator

Answer 14

A method (like a set method) that changes the value of a private variable.

Question 15

Non-Static Method

Answer 15

A method that can only be used when you have created an object of the class.

Question 16

Object

Answer 16

An instance of a class that you create to represent something in your program, with its own data and behaviors.

Question 17

OOP Design

Answer 17

A way of designing software by breaking it into objects that interact to solve problems.

Question 18

Overloading

Answer 18

Having multiple methods with the same name in a class, but with different input parameters (types or number).

Question 19

Overriding

Answer 19

When a child class provides a new version of a method from its parent class. The child’s version is used instead.

Question 20

Parameters

Answer 20

Data or variables that you pass to a method so it can use them

Question 21

Polymorphism

Answer 21

The ability to use the same method name in different ways, like with overloading or overriding.

Question 22

Properties

Answer 22

The characteristics or data of an object (same as attributes or fields).

Question 23

Static Method

Answer 23

A method you can use without creating an object of the class.

Question 24

toString Method

Answer 24

A method that returns a text description of an object.

Question 25

Typed Method

Answer 25

A method that gives back a value (like a number or string). For example, get methods are typed methods.

Question 26

Void Method

Answer 26

A method that does something but doesn’t return a value, like a set method.