Java Class and Object Quiz

1. What is a class in Java?

• A method for organizing code

• A blueprint for creating objects

• A type of data structure

• A keyword used for loops

2. What is an object in Java?

• An object in Java is a type of data structure

• An object in Java is a mathematical equation

• An object in Java is a type of loop

• An object in Java is a real-world entity that has state and behavior.

3. How do you declare a class in Java?

• By using the 'class' keyword followed by the class name and the class body.

• By using the 'object' keyword followed by the class name and the class body.

• By using the 'method' keyword followed by the class name and the class body.

• By using the 'interface' keyword followed by the class name and the class body.

4. How do you create an object in Java?

• new ClassName()

• createObject(Class)

• makeObject(ClassName)

• ClassName.create()

5. What is the difference between a class and an object in Java?

• A class and an object are the same thing in Java

• An object is a blueprint for creating classes, while a class is an instance of an object

• A class is a blueprint for creating objects, while an object is an instance of a class.

• A class is used for storing data, while an object is used for defining methods

6. Can a Java class have multiple objects?

• No

• Maybe

• Only if it's a static class

• Yes

7. What is the 'new' keyword used for in Java?

• To declare a variable

• To delete a class

• To define a method

• To create an instance of a class

9. How do you access the variables and methods of a class in Java?

• By creating an object of the class and using the dot operator

• By importing the class

• By using a switch statement

• By using the class name as a variable

12. What is the use of 'this' keyword in Java?

• To create an instance of a class

• To refer to the current instance of the class

• To define a method

• To declare a variable