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IT1712 Object-Oriented Programming Concepts Quiz

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IT1712 Object-Oriented Programming Concepts Quiz

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Questions and Answers

What is an object's state determined by?

The Java package it belongs to

Its behaviors

The values of its attributes (correct)

The methods it inherits

How are objects of the same kind defined in object-oriented programming?

With different data types

By sharing the same class (correct)

By implementing methods

Through interfaces

What is the purpose of inheritance in Java classes?

To avoid repetition of programming instructions (correct)

To restrict access to class attributes

To prevent the use of methods

To create unrelated classes

What is an interface in Java?

A component that defines behaviors (D) Signup and view all the answers

How are related classes and interfaces grouped together in Java?

Into a package (C) Signup and view all the answers

What is the purpose of an import statement in Java?

To include classes from a package in a program or class definition (D) Signup and view all the answers

In Java, where should each class in a package be placed?

In a separate file whose name begins with the name of the class (B) Signup and view all the answers

Why is it not necessary for a class to be in the same folder as other classes in the package to use them?

Due to the use of import statements in Java (A) Signup and view all the answers

Which syntax is used to import all classes from a package in Java?

import java.util.*; (A) Signup and view all the answers

What does the file name for a Java class in a package usually begin with?

The name of the class (C) Signup and view all the answers