Java Hashmap Keyset Method Example The set returned by hashset.keyset() is a view onto the keys, not a snapshot. you can remove via the iterator, although that requires that you use the iterator explicitly instead of via an enhanced for loop. It is the hash table based implementation of the map interface. you will learn how java hashmaps work, how to iterate through a hashmap and various hashmap methods to work with.

Java Hashmap Put K Key V Value Method Example Use of iterator to remove the sets. advantage: if we use for loop, it get translated to iterator internally but without using iterator explicitly we can't remove any entry during iteration.on doing so, iterator may throw concurrentmodificationexception. Use the keyset () method to get the keys in hashmap you can remove elements from the returned set and the underlying hashmap will also remove the associated value.

Java Hashmap Replace Method Example

Java Hashmap Keyset Method Prepinsta