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UML Class Diagram Quiz

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Questions and Answers

What defines an object in Java?

The number of methods it has

The data fields it contains

The class name it belongs to

Its state and behavior (correct)

What does a Java class use variables for?

To define methods

To define object state

To define data fields (correct)

To define object behavior

What is the purpose of a Java class?

To handle user inputs

To execute specific tasks

To store data fields only

To define objects of the same type (correct)

What is an object's state in Java?

The defining characteristics of the object (C) Signup and view all the answers

What does an object's behavior define in Java?

What the object does (B) Signup and view all the answers

What are the data fields for the Circle class?

radius (A) Signup and view all the answers

What defines an object in Java?

Its state and behavior (B) Signup and view all the answers

What does an object's behavior define in Java?

What the object does (A) Signup and view all the answers

What is the purpose of a Java class?

Defines objects of the same type (C) Signup and view all the answers

What does a Java class use variables to define?

Data fields (C) Signup and view all the answers

Study Notes

Object-Oriented Programming Concepts

Object-oriented programming (OOP) involves programming using objects that represent entities in the real world.
An object has a unique identity, state, and behaviors.
State of an object consists of a set of data fields (properties) with their current values.
Behavior of an object is defined by a set of methods.

Object Characteristics

Objects can be distinctly identified, such as a student, a desk, a circle, a button, or even a loan.
Objects have a unique identity, state, and behaviors.

Object Identity

Objects can be identified in the real world and in programming.
Examples of objects include students, desks, circles, buttons, and loans.

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Description

Test your knowledge of building UML class diagrams in object-oriented programming. This quiz covers concepts such as OOP, object representation, and real-world entity identification.