Java - Using Arrays

What is the purpose of iterating over an array?

• To modify the array's size

• To shuffle the array elements randomly

• To delete elements from the array

• To access each element sequentially

How do you access an element in an array?

• Using a special operator

• By calling the array's name only

• By specifying its index in square brackets

• Using a specific method

Which loop structure is commonly used for iterating over an array?

• All of the above

• for loop

• do-while loop

• while loop

What is the correct way to declare an array that will store integer values?

• int arrayName[];

• Both A and C are correct

• array int[] arrayName;

• int[] arrayName;

What is the initial value of the sum variable when summing array elements?

• 1

• The first element of the array

• 0

• Undefined

Which of the following can be an array type?

• None of the above

• Only object types

• Only primitive types

• Both primitive and object types

In which scenarios can arrays be used?

• As method parameters

• As method return types

• As instance variables

• All of the above

What happens when you try to access an array index that is out of bounds?

• The program ignores the operation

• An ArrayIndexOutOfBoundsException is thrown

• It will return a default value

• The program will automatically resize the array

What does the following segment of code print out? int[] numArray = { 2, 7, 4, 12, 0, 2 };
System.out.println("Number: " + numArray[2]);

• Number: 2
• Number: 7
• Number: 4
• Number: 12

What does the following segment of code print out? int[] numArray = { 2, 7, 4, 12, 0, 2 };
System.out.println("Number: " + numArray[numArray.length - 1]);

• Number: 2
• Number: 0
• Number: 12
• Number: 6