Android List traversal Delete list.remove () obviously deleted a number of results only deleted one

to remove an element during the traversal of the list Correct Practice

public class ListRemoveTest {

3	public static void main(String[] args) {

4	List<Integer> list = newArrayList<Integer>();

5	list.add(1);

6	list.add(2);

7	list.add(2);

8	list.add(3);

9	list.add(4);

10

11	Iterator<Integer> it = list.iterator();

12	while(it.hasNext()) {

13	Integer value = it.next();

14	if (2 == value) {

15	it.remove();

16

}

17	System.out.println(value);

18

}

19	System.out.println("最后结果="+ list.toString());

20

}

21

}

1
2
2
3
4
Final results =[1, 3, 4]

We saw that two of the 2 were removed and the final result was 1,3,4 completely correct.

But for iterator's remove () method, there are also areas that need our attention:

1, each call Iterator.next () method, can only call the Remove () method once.

2. Before calling the Remove () method, you must call the next () method once.

Android List traversal Delete list.remove () obviously deleted a number of results only deleted one