Nested For Loops
Just as with Do While loops, we can nest one for loop inside another.  This is very common when dealing with 2-dimensional arrays
For each iteration of the outer loop executes, we start the inner loop over again.

Visualizing Nested For Loops
We can show this graphically by drawing a box around the inner loop:

For Loops & Do While Loops
These are equivalent:

Mini-Exercise
How many squids does this print?

Mini-Exercise -- Answer
How many squids does this print?

Mini-Exercise
What does this print?

Mini-Exercise – Answer
What does this print?