Understanding Arrays in Java

What is the purpose of iterating over an array?

• To access each element sequentially

• To shuffle the array elements

• To modify the array's size

• To delete elements from the array

How do you access the ith element of an array named 'scores'?

• scores(i)

• scores.i

• scores[i]

• scores->i

What is required to sum all elements in an array?

• A for loop and a sum variable

• A while loop only

• A do-while loop and a sum variable

• No loop is required

What is the correct way to declare an array in Java?

• int array scores = {1, 2, 3};

• int scores[] = {1, 2, 3};

• array scores = {1, 2, 3};

• int[] scores = new int[]{1, 2, 3};

What is the purpose of the 'length' property of an array?

• To resize the array

• To determine the number of elements in the array

• To find the last element of the array

• To check if the array is empty

What does it mean to 'iterate' over an array?

• To reverse the array

• To sort the array

• To go through each element of the array sequentially

• To randomly access elements in the array

How can arrays be used in Java classes?

• As instance variables or method parameters/return types

• As methods only

• Arrays cannot be used in classes

• As local variables only

What is the result of trying to access an array index that is out of bounds?

• No exception is thrown

• ArrayIndexOutOfBoundsException

• NullPointerException

• IndexOutOfBoundsException

What is an ArrayIndexOutOfBoundsException?

• An exception thrown when an array is initialized with incorrect size

• A compile-time error for incorrect array syntax

• An exception thrown when trying to access an index outside the array's bounds

• An error that occurs when an array is accessed with a negative index

In a classroom array of student objects, what does each element represent?

• A student object with multiple properties

• A numerical ID for each student

• A single student's name

• A list of all students' grades