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Editorial Team
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Asked: 2026-05-22T01:57:48+00:00

HashMap model1 = wordobject.getMap(); Set sample = model1.keySet(); Iterator it = sample.iterator(); == Can

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HashMap model1 = wordobject.getMap();
Set sample = model1.keySet();
Iterator it = sample.iterator();

==
Can you please explain me the above 3 lines?
I see that we are trying to get the hash table from the object and get it assigned to the HashMapmodel1.

1) what is keyset?
2) what does .iterator do?

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1 Answer

  1. Editorial Team

    You are declaring a typical Java HashMap in the first line (a little obvious). You usually construct a HashMap using generics for key value pairs: HashMap<K,V>

    The Java API HashMap class allows you to get a set of the keys used for the HashMap. The keySet() method returns a Set<K>.

    An iterator allows you to iterate through the set calling methods like next() and hasNext(). It is a way to traverse the set sequentially.

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