java遍曆時刪除元素

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

public class Main {

    public static void print(List<Integer> list) {
        Iterator<Integer> itr = list.iterator();
        while (itr.hasNext()) {
            System.out.print(itr.next());
            System.out.print(", ");
        }
        System.out.println();
    }

    public static void main(String[] args) {
        List<Integer> s = new ArrayList<Integer>();
        for (Integer i = 0; i < 10; i++) {
            s.add(i);
        }
        print(s);

        Iterator<Integer> itr = s.iterator();
        while (itr.hasNext()) {
            Integer i = itr.next();
            if (i % 3 == 0) {
                itr.remove();
            }
        }
        /**
         * 錯誤
         */
//        for(Integer i: s){
//            if (i % 3 == 0) {
//                s.remove(i);
//            }
//        }
        print(s);
    }

}