Java while loop updating the condition?

Question

Is there a way to update the condition in a while loop?
In the below code, updating j if someCondition has been met?
So that that the initial loop doesn't loop for 20 times,
but rather it loops for 20+n times whenever someCondition.

public class foo {
    public static void main(String[] args) {
        int i = 0;
        int j = 20;
        while(i < j) {
            //do something
            i++
            if(someCondition) {
                j++;    
            }
        }
    }
}

Answer 1

yes you can. just try it and you will see that you can. even more, you can change i inside for(int i=0; i<n; i++) , there is no problem with this kind of changes.

Answer 2

用 do/while 循环试试，它在执行代码后比较值