What other methods does Iterator have besides hasNext, next, and remove?

In Java, the Iterator interface from the standard library (java.util.Iterator) defines three main methods:

• hasNext() — checks if there is a next element.
• next() — returns the next element.
• remove() — removes the last returned element from the collection.

Additionally, starting from Java 8, the Iterator interface is extended with the method:

• forEachRemaining(Consumer<? super E> action) — performs the given action for each remaining element of the iterator, which is convenient for processing elements without an explicit loop.

Example of using forEachRemaining:

Iterator<String> it = list.iterator();
it.forEachRemaining(System.out::println);

There are no other methods in the standard Iterator, but some extensions and specialized iterators may have additional methods.