/*
Iterate through keys of Java Hashtable example
This Java Example shows how to iterate through the keys contained in the
Hashtable object.
*/
import java.util.Hashtable;
import java.util.Enumeration;
public class IterateThroughKeysOfHashtableExample {
public static void main(String[] args) {
//create Hashtable object
Hashtable ht = new Hashtable();
//add key value pairs to Hashtable
ht.put("1","One");
ht.put("2","Two");
ht.put("3","Three");
/*
get Enumeration of keys contained in Hashtable using
Enumeration keys() method of Hashtable class
*/
Enumeration e = ht.keys();
//iterate through Hashtable keys Enumeration
while(e.hasMoreElements())
System.out.println(e.nextElement());
}
}
/*
Output would be
3
2
1
*/
