How to use linked list as an interface argument in Java

I'm trying to create an interface with an Array list of an abstarct class objects ,but i had no luck so far.What i'm trying to do is this :

 interface aoeSkill<ArrayList<Unit> >
{
    void aoeAttack(ArrayList<Unit> );
}

class Name extends Unit implements aoeSkill<ArrayList<Unit> > {
     
      public void aoeAttack (ArrayList<Unit> unitsList)
       {
         this.aoeAttackObj.aoeAttackAct(this.getUnitsWithinRange());
       }

 }

What i get is multiple errors , at the interface declaration.Any advice would be gratly appreciated!