Reuse code of a method that inserts an array of objects

I have a method that inserts a list of objects in the database:

public void insert(List<Object> objects){

}

Now, I need to insert a single object. I do not want to create a new method that does the insertion of a single object because it would duplicate a lot of code, so I do the following:

public void insert(Object object){
  List<Object> objects = new ArrayList<>();
  objects.add(object);
  insert(objects);
}

I do not know if the above is correct, my knowledge of java is high level so I do not know how expensive it is for the system to convert the object to the arrangement and if this is a good development technique. Or if by some pattern or convention I must create a method to insert a single object.