Learn Java with Math: Using Fun Projects and Games

© Ron Dai 2019

R. DaiLearn Java with Mathhttps://doi.org/10.1007/978-1-4842-5209-3_8

8. Loop Structure – for Loop

Ron Dai¹ 

(1)

Seattle, WA, USA

 

Simply put, the loop structure repeatedly does something until the state is changed (see Figure 8-1).

Figure 8-1

The for loop structure

Example

Here is an example:

        for (int i = 0; i < 100; i++) {

               <do something>

        }

There are three key elements in the for statement:

• int i = 0: declare a counter variable and assign an initial value to it;

• i < 100: define the condition to continue with the for loop; as long as this condition is true the loop will run, when it is not true, we stop and exit from ...