Java Iterator.remove() is a method in the Java Iterator interface that removes the last element returned by the iterator from the underlying collection. It allows for safe removal of elements while iterating, avoiding ConcurrentModificationException that might occur when modifying a collection during iteration. Introduced in Java 1995 with Java 1.0, remove() is critical for maintaining integrity while iterating over collections in Java.

https://docs.oracle.com/javase/8/docs/api/java/util/Iterator.html