java.lang.ClassCastException: java.util.ArrayList$Itr cannot be cast to java.util.ArrayList

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Collections which extend iterators

java.util.ArrayList$Itr cannot be cast to java.util.ArrayList

Collections which extend iterators

java.util.ArrayList$Itr cannot be cast to java.util.ArrayList

java.lang.ClassCastException: java.util.ArrayList$Itr cannot be cast to java.util.ArrayList	at MergingIterator.(MergingIterator.java:85)	at Main.main(Main.java:43)