Java HashSet Iterate Through Keys

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import java.util.Hashtable;
import java.util.Enumeration;

public class JavaHashTableIterateThroughKey {

	public static void main(String[] args) {

		Hashtable hashTable = new Hashtable();

		hashTable.put("1", "One");
		hashTable.put("2", "Two");
		hashTable.put("3", "Three");

		Enumeration enumeration = hashTable.keys();

		while (enumeration.hasMoreElements())
			System.out.println(enumeration.nextElement());
	}
}

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