Learn Java from Scratch - A Beginner's Guide - Step 08 - Do While Loop in Java - an Example - Cube While User Enters Pos

This video tutorial explains how to design and implement a simple Java program using a do-while loop. The program repeatedly asks the user for a number, calculates its cube, and continues until a negative number is entered. The tutorial covers creating a scanner for input, implementing the loop, and refining the program to handle edge cases. The video concludes with a demonstration of the program's execution and output.

What is the main task of the program discussed in the video?

• To find the factorial of a number

• To print numbers in reverse order

• To calculate the square of a number

• To calculate the cube of a number until a negative number is entered

Which Java class is used to get user input in the program?

• InputStream

• Scanner

• BufferedReader

• FileReader

Why is a do-while loop used in this program instead of a while loop?

• Because it is easier to implement

• Because it uses less memory

• Because it allows the question to be asked at least once

• Because it is more efficient

What is the initial value assigned to the 'number' variable in the do-while loop?

• -1

• 0

• 10

• 1

What message is displayed when the user enters a negative number?

• Invalid input.

• Thank you, have fun.

• Try again!

• Goodbye!

How does the program ensure that the cube is not printed for a negative number?

• By using an if statement to check the number

• By using a for loop

• By using a switch case

• By using a break statement

What is the purpose of formatting the code using Control Shift F?

• To compile the code

• To debug the code

• To format the code for better readability

• To run the code