Concurrent Modification exception
concurrentmodification, java
Solution
To avoid the `ConcurrentModificationException`, you should write your code like this:
import java.util.*;
public class SomeClass {
public static void main(String[] args) {
List<String> s = new ArrayList<String>();
for(String a : args)
s.add(a);
ListIterator<String> it = s.listIterator();
if(it.hasNext()) {
String item = it.next();
}
System.out.println(s);
}
}
A `java.util.ListIterator` allows you to modify a list during iteration, but not between creating it and using it.
Problem
I have this little piece of code and it gives me the concurrent modification exception. I cannot understand why I keep getting it, even though I do not see any concurrent modifications being carried out. ``` import java.util.*; public class SomeClass { public static void main(String[] args) { List<String> s = new ArrayList<>(); ListIterator<String> it = s.listIterator(); for (String a : args) s.add(a); if (it.hasNext()) String item = it.next(); System.out.println(s); } } ```