The java.util.Hashtable is used to create a set of key elements in the hash table. It basically returns a set view of the keys, or we can create a new set and store the key elements in them.
public Set<K> keySet()
K : type of the Keys in the hash table
Parameters: The method does not take any parameter.
Return Value: The method returns a set having the keys of the hash table.
Below programs are used to illustrate the working of java.util.Hashtable.keySet() Method:
Set created from Hashtable Keys contains : 3 2 1
Set created from Hashtable Keys contains : For Geeks geeks
Note: The same operation can be performed with any type of Mappings with variation and combination of different data types.
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