Programming Paradigms and OOP Concepts

<p>A constructor is a special method that initializes object data, called implicitly when an object is created. (B)</p> Signup and view all the answers

<p>A reference type holds a memory address of another object, while a primitive type holds a specific value directly. (D)</p> Signup and view all the answers

<p>To assign an employee number to an Employee object. (C)</p> Signup and view all the answers

<p>Each object uses the same method to set its employee number. (B)</p> Signup and view all the answers

<p>The clerk's number is 345 and the driver's number is 567. (B)</p> Signup and view all the answers

<p>Once for each method. (D)</p> Signup and view all the answers

<p>Employee manager = new Employee(); manager.setEmpNum(890); (A)</p> Signup and view all the answers

<p>A user-defined collection of objects with common properties. (C)</p> Signup and view all the answers

<p>Characteristics that define an object. (B)</p> Signup and view all the answers

<p>An object has features that make it unique among its class. (D)</p> Signup and view all the answers

<p>The actions that the object can perform. (D)</p> Signup and view all the answers

<p>A block of code that performs a specific function. (C)</p> Signup and view all the answers

<p>There will be only one copy of that field shared among all objects. (D)</p> Signup and view all the answers

<p>Breed (A)</p> Signup and view all the answers

<p>To return the employee number of the current instance. (B)</p> Signup and view all the answers

<p>Objects represent things, while methods represent actions. (D)</p> Signup and view all the answers

<p>It allows access only from the same class. (A)</p> Signup and view all the answers

<p>A class describes the attributes and methods of its objects. (C)</p> Signup and view all the answers

<p>To set the employee number for an Employee object. (C)</p> Signup and view all the answers

<p>Information hiding (C)</p> Signup and view all the answers

<p>Specify the type and identifier for the object. (B)</p> Signup and view all the answers

<p>int (B)</p> Signup and view all the answers

<p>To allow other classes to retrieve the empNum value. (C)</p> Signup and view all the answers

<p>Before or after the main() method (A)</p> Signup and view all the answers

<p>Business hours for the entire week (D)</p> Signup and view all the answers

<p>public static void displayHours() (A)</p> Signup and view all the answers

<p>The order in which they are called (A)</p> Signup and view all the answers

<p>Methods cannot be defined within other methods (A)</p> Signup and view all the answers

<p>To execute println() statements for business hours (C)</p> Signup and view all the answers

<p>The println() statement in main() method (B)</p> Signup and view all the answers

<p>Through multiple println() statements (C)</p> Signup and view all the answers

<p>CompanyInfo.displayHours() (C)</p> Signup and view all the answers

<p>It keeps the main() method concise and clear. (B)</p> Signup and view all the answers

<p>Data field (D)</p> Signup and view all the answers

<p>Some classes are designed for no object instantiation. (D)</p> Signup and view all the answers

<p>Data fields (C)</p> Signup and view all the answers

<p>With an uppercase letter (D)</p> Signup and view all the answers

<p>Object-Oriented Programming (D)</p> Signup and view all the answers

<p>Start and end of the class definition (B)</p> Signup and view all the answers

A blueprint or template for creating objects with similar properties and behaviors.

A specific instance of a class. It has its own unique values for the properties defined by the class.

A function or procedure that an object can perform. It defines the actions or behaviors that an object can do.

These are characteristics that define an object, like its color, size, or name.

Objects of the same class share common properties and methods, but can have different values for their properties.

Objects can be created from a class, allowing for the creation of many instances of the same type.

Methods can be used to modify or access the properties of an object.

Understanding the class an object belongs to helps understand its properties and methods.

A method that is executed first when a Java program runs. It acts as the entry point for the application.

Defines how the business hours of a company are displayed in a Java program.

Methods are placed within a class but outside of any other methods.

Methods cannot be placed inside each other.

The order in which methods are called determines the execution flow of a program.

Methods can be called multiple times within a program and from different parts of the code.

The order in which methods are defined in a class doesn't affect the order in which they are executed. The main() method always executes first.

A special method that creates and initializes objects. It's named after the class it constructs.

A type of variable that refers to an object. It holds the memory address of the object.

An operator used to allocate memory for an object. It calls the constructor to create the object.

A method that can be accessed using the object's identifier and a dot.

A complete name that includes the class and method name, separated by a dot (.).

Variables declared within a class but outside any method. They represent the data associated with an object of that class.

The process of creating an instance of a class. It brings the class to life, making an object.

A mechanism in OOP that allows classes to be divided into different types, controlling access to their members.

The section of a class where data fields and methods are defined. It's enclosed within curly braces.

A data field that is shared by all objects of a class. It is declared with the 'static' keyword.

A data field that is unique to each object of a class. It is declared without the 'static' keyword.

A data field declared with the 'private' access specifier, meaning only methods within the same class can access it. This helps protect data integrity by preventing external classes from directly modifying it.

A method that returns a value stored in a data field. They are typically named with the prefix 'get' and follow the 'get' + [field name] convention.

A method that sets or changes a value in a data field. They are typically named with the prefix 'set' and follow the 'set' + [field name] convention.

A sequence of characters enclosed in double quotes, used to represent text data in Java programs. For example, "Hello, world!" is a string.

A class in Java that represents a data type for storing and manipulating text. This class provides methods for working with text, such as finding the length of a string, comparing strings, and converting strings to other data types.

The act of creating a new instance or object from a Class in Java. It brings the blueprint (class) to life.

Methods that allow a class to be initialized with values. In the program, it sets the employee number.

Methods that allow you to retrieve the value of a property from an object. In this example, it returns the employee number.