Как преобразовать строку в пространство, отделенное int в Java

resetting temp to empty string after you parse it to create place for new digits.
that at the end of your string will be no space, so if (numbers.charAt(i) == ' ') { ary[j] = Integer.parseInt(temp); j++; } will not be invoked, which means you need invoke ary[j] = Integer.parseInt(temp);
Troubled Tamarin