ListIterator throwing an error

Question

private List<RolePermission> permissionList = new ArrayList<RolePermission>();
ListIterator<RolePermission> iterator = permissionList.listIterator();
permissionList.remove(iterator.next().getRolePermissionName().contains("http"));

I want to remove those item from list which is containing term "http" . but this code is not working.

"this code is not working" is quite vague: Does it compile? Does it throw an exception? What exception? On what line? etc. — assylias, Sep 13 '13 at 17:07
You should use Iterator.remove() to do this. Check out http://stackoverflow.com/questions/223918/efficient-equivalent-for-removing-elements-while-iterating-the-collection — Alex Pritchard, Sep 13 '13 at 17:09

score 5 · Answer 1 · answered Sep 13 '13 at 17:09

5

You need to use iterator.remove();

while (iterator.hasNext())
{
   if (iterator.next().getRolePermissionName().contains("http"))
       iterator.remove();
}

answered Sep 13 '13 at 17:09

Matthew Mcveigh

5,695
22
22

You should "accept" the answer if you think @Matthew gave what you need. – dcsohl Sep 13 '13 at 17:22

score 1 · Answer 2 · answered Sep 13 '13 at 17:16

The method List#remove(java.lang.Object) is in your case not suitable for the type boolean (autoboxed to Boolean), the type which contains() returns. A ClassCastException is thrown.

you could try this to remove using iterator:

private List<RolePermission> permissionList = new ArrayList<RolePermission>();   
ListIterator<RolePermission> iterator = permissionList.listIterator();
RolePermission rp = iterator.next();
if(rp.getRolePermissionName().contains("http")) {
    iterator.remove();
}

ListIterator throwing an error

2 Answers2