KwCheng's blog

HashTable can improve our search time when we need to find data.

There is a example for HashTable class in java :

import java.util.Hashtable;

Hashtable<String, Integer> numbers = new Hashtable<String, Integer>(); 

numbers.put("one", 1); 

numbers.put("two", 2); 

numbers.put("three", 3);

Integer n = numbers.get("two"); 

if (n != null) 

{ 

System.out.println("two = " + n); 

}

Integer n = numbers.get("two");

this line means that we can get the association value of "two" if we find the key value "two".

ref : http://docs.oracle.com/javase/7/docs/api/java/util/Hashtable.html