for loop without index declaration

Question

So I declare a variable some where and initialize it. Now later on I need to use it to loop while its still positive so I need to decrement it. To me looping using a condition a

Answer 1

another way is this one:

Integer i = 10;
while(--i>0) {
    System.out.println(i);
}

When i is 0 while condition is false... so.. it will print from 9 to 1 (9 items)

Integer i = 10;
while(i-->0) {
    System.out.println(i);
}

Will print from 9 to 0... (10 items);