Why am I getting java.util.ConcurrentModificationException?

Question

As I run the following code :

    import java.util.LinkedList;

    class Tester {
      public static void main(String args[]) {
        LinkedList

        

Answer 1

When you iterate through a list, you can't remove items from it. Doing so causes the exception.

Do:

int size = list.size();
for (int i = 0 ; i< size ; i++) {
   list.add(0,"art");
   list.remove(6);
   System.out.println(list);
}