Java Arrays Quiz

What is an array in Java?

• A collection of related data items of the same type

• A dynamic data structure

• A function to manipulate strings

• A type of loop

What is the index of the first element in an array?

• 1

• 0

• -1

• The index is user-defined

What does an array object store in its length instance variable?

• The total number of methods

• The size of the array

• The number of elements in the array

• The data type of the array

Which keyword is used to create an array in Java?

• array

• new

• static

• class

Which of the following statements is true about arrays in Java?

• Arrays can have elements of different types

• Arrays are of a fixed length once created

• Arrays do not require an index to access elements

• Arrays are not objects in Java

What does the enhanced for loop avoid?

• Null pointer exception

• Passing references

• Array index out of bounds

• All exceptions

Which of these types is not a primitive type in Java?

• int

• char

• boolean

• String

What happens when you try to access an array index outside of its bounds?

• Nothing happens

• Java throws an ArrayIndexOutOfBoundsException

• The program automatically adjusts the size of the array

• Java throws a NullPointerException

Which of these is a method of the Arrays class?

• sort

• binarySearch

• equals

• All of the above

Which of the following can be used to initialize an array?

• Array Initializer

• Command Line Argument

• new keyword

• All of the above