For

The for loop is a shortcut to writing a while loop which has distinct steps that

Declare a variable
Check that variable to know whether to stop iterating
Update the variable at the end of each iteration

As with many things, this might be easiest to see by looking at an example.

~void main() {
// Will run 10 times
for (int number = 0; number < 10; number++) {
    System.out.println(number);
}
~}

That for loop works about the same as this while loop.

~void main() {
int number = 0;
while (number < 10) {
    System.out.println(number);

    number++;
}
~}