What is wrong with this implementation of the next() in the CompositeIterator class.

Question

What is wrong with this implementation of the  next () in the  CompositeIterator  class.

Accepted Answer

The iterator of component is not pushed.

Answer

The else statement should return  component.next()  instead of  null .

Answer

The  pop()  method should be used instead of  peek() .

Answer

The iterator must be returned instead of the component.

Answer

Nothing is wrong.

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