PPT Slide

The for loop: used when the control variable is a simple count of the number of iterations,

e.g.: “create a loop that reads and processes the next 100 numbers.”

The while loop: used when the control variable has a value that already exists and is simply obtained by the loop.

e.g.: “create a loop that reads in numbers and processes them until it reads in a 100.”

The do-while loop: used when the control

variable’s value must be calculated

by the loop itself.

e.g.: “create a loop that reads in numbers until their sum is greater than 100.”

Java Iteration Constructs: When to Use