Zatrzymywanie iteracji przy ArrayList

Question

Witajcie.

Jak w Javie zatrzymać pętle(w ostateczności zresetowanie jej ) foreach albo iterator na czas dodawania elementu lub odejmowania z ArrayList? Jest to w ogóle możliwe?  

Dzięki i pozdro.

Comments

Zobacz sobie coś takiego jak listIterator

Answer 1

Jasne, że jest to możliwe: https://stackoverflow.com/questions/1196586/calling-remove-in-foreach-loop-in-java

Answer 2

Why not just break?

for (Client c : clientList) {
    userA = c.getUser();
    if (userA.equals(user)) {
        passA = c.getPassword();
        if (passA.equals(pass)) {
            loginOK = true;
            found = true;
            break;
        }
    }
}

(I'm assuming you need to tell the difference between getting to the end and finding someone and getting to the end and not finding someone. You probably only need one variable though, rather than two...)

With your while loop attempt, you're going to iterate over the whole list forever if the user isn't found, and even if the user is found, it will loop over the whole list once - because your for loop is inside the while loop. The while condition is only checked once per iteration of the while loop.

Source: WhatStatus.co

Comments

break dont restore the operation :)... just break, when we need after last  loop.

After j8 using if/if/if.... is not good  practice so you should use stream/filter