Fundamentals Of Object-Oriented Programming: Java and IntelliJ - Program: Simple Interest Calculator

This video tutorial explains how to calculate the interest earned on an investment over one year at a rate of 0.035%. It covers setting up variables, prompting user input for the principal amount, performing calculations to determine interest and updated principal, and formatting the output to display results with two decimal places. The tutorial also includes adjustments to ensure the output is clean and formatted correctly.

What is the initial step in calculating interest on an investment?

• Declaring necessary variables

• Outputting the results

• Setting up user input

• Formatting the output

Which method is used to read a double value for the principal amount?

• nextLine()

• nextFloat()

• nextInt()

• nextDouble()

How is the interest amount calculated?

• Principal divided by rate

• Principal times rate

• Principal plus rate

• Rate minus principal

Which format specifier is used to print a double value?

• %c

• %f

• %d

• %s

What is the purpose of using a printf statement in this context?

• To perform calculations

• To declare variables

• To read user input

• To output a formatted string

How can you ensure that the output is limited to two decimal places?

• By using the nextDouble() method

• By using the %d format specifier

• By declaring variables as integers

• By adding a decimal and a two before the %f specifier

What adjustment is made to ensure the second string is not joined to the first?

• Adding a semicolon

• Using a different format specifier

• Adding a space at the beginning of the second string

• Changing the variable type