Java Iterator.hasNext() is a method in the Java Iterator interface that checks if there are more elements to iterate over in a collection. It returns true if the iterator can move to the next element and false if the iteration has reached the end. Introduced in Java 1995 with Java 1.0, hasNext() is a key method for traversing collections and is used frequently in loops for processing elements in Java's Java Collections Framework.

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