Primitive vs. Reference Types (Java)

Which of the following is not a primitive data type?

• Int

• Float

• Double

• String

• Char

Which of the following is a primitive data type?

• Array

• Object

• Boolean

• Function

• None of the above

Which of the following is not a reference data type?

• Enum

• LinkedList

• Array

• String

• Char

Which of the following is a reference data type?

• Boolean

• Long

• Array

• Byte

• Short

Which of the following is a reference data type?

• LinkedList

• Long

• Char

• Byte

• Double

How do you turn a primitive data type into an object?

• By using its wrapper class

• By encapsulation

• By inheritance

• By using polymorphism

Which of the following is a primitive data type in Java?

• String

• Array

• Double

• ArrayList

• Class

​ (a)   ​ ​ types are used to store references (memory addresses) to objects or complex data structures. They are more versatile and can represent comple​ x data structures.

• Reference data
• Primitive data

​ (a)   ​ ​ types represent simple, single values. They are not objects and don't have methods.​ ​

• Primitive data
• Reference data

​ Which data type fits this description: ​ They are stored directly in memory and have a fixed size, which makes them more memory-efficient.

• Primitive data
• Reference data