What is Nested iteration in AP® Computer Science A?

Nested iteration

Also called: nested loops

A loop inside the body of another loop. The inner loop completes all its iterations before the outer loop continues to its next iteration.

Appears in the course and exam description (CED): 2.11.A.1

With fixed bounds, the inner body runs (outer iterations) times (inner iterations). Use a different loop control variable for each loop.

for (int i = 1; i <= 3; i++) {
    for (int j = 1; j <= i; j++) {
        System.out.print("*");
    }
    System.out.println();
}

Output:

*
**
***