Understanding Arrays in Programming

This video tutorial covers the basics of using arrays in Java, including iterating over arrays, summing elements, using arrays in classes, handling exceptions, and understanding array references. It provides practical examples to illustrate these concepts, such as creating a classroom with student objects and managing exam scores.

What is the process of looping through all elements of an array called?

• Indexing

• Iterating

• Referencing

• Summing

Which loop is commonly used to iterate over an array in Java?

• Switch loop

• Do-while loop

• While loop

• For loop

Where should the sum variable be initialized when summing elements of an array?

• In the array declaration

• At the end of the loop

• Outside the loop

• Inside the loop

What type of data can an array hold?

• Both primitive types and objects

• Only objects

• Only strings

• Only primitive types

What happens if you try to access an index outside the bounds of an array?

• The program continues without error

• The array resizes automatically

• An ArrayIndexOutOfBoundsException is thrown

• The value at the last index is returned

What is the return type of the method getBestScore in the example?

• int

• int[]

• Student[]

• Student

What happens when you assign one array reference to another?

• Both references point to the same array

• The original array is copied

• A new array is created

• The original array is deleted

In the classroom example, what is the type of the instance variable 'students'?

• int[]

• Student

• Student[]

• String[]

How is the average exam score calculated in the student class?

• By taking the highest score

• By summing all scores and dividing by the number of exams

• By taking the lowest score

• By summing all scores without division

What is the result of modifying an element in an array that has been referenced by another array?

• Neither array is modified

• Both arrays are modified

• Only the referenced array is modified

• Only the original array is modified