Object-Oriented Programming and Java Basics Quiz

What is the primary focus of the object-oriented approach?

• Using logical operators

• Bundling data and code into objects

• Writing procedures

• Creating functions

Which of the following is NOT a benefit of encapsulation?

• Modularity

• Simplified maintenance

• Increased redundancy

• Data hiding

What does a class represent in object-oriented programming?

• A data type

• An instance of an object

• A blueprint for creating objects

• A method of execution

Which keyword is used to implement inheritance in Java?

• extends

• inherits

• base

• super

What is the purpose of the main method in a Java program?

• To define a class

• To create objects

• To compile the program

• To start program execution

Which of the following best describes polymorphism?

• The use of private variables

• The ability to inherit from multiple classes

• The ability of an object to take on many forms

• The process of hiding data

What is the role of the Java Virtual Machine (JVM)?

• Defines class structures

• Manages memory allocation

• Executes Java bytecode

• Compiles Java code

Which of the following is a characteristic of encapsulation?

• Using public variables

• Hiding internal details

• Creating multiple classes

• Defining methods only

What does inheritance allow in object-oriented programming?

• Creating standalone classes

• Sharing attributes and methods between classes

• Executing methods randomly

• Converting data types

What is the purpose of comments in Java code?

• To improve readability

• To execute code

• To compile the program

• To define variables