import java.util.Hashtable;
public class HashTableKeyCount {
public static void main(String[] args) {
Hashtable<Integer,String> ht = new Hashtable<Integer,String>();
/*
* Maps the specified key to the specified
* value in this hashtable
*/
ht.put(1, “java”);
ht.put(2, “jersey”);
ht.put(3, “spring”);
ht.put(4, “c”);
ht.put(5, “php”);
//Returns the number of keys in this hashtable
System.out.println(“Hash Table size =”+ht.size());
}
}
Output:
Hash Table size =5