built dictionary in java

1import java.util.*;
2
3class My_Dictionary 
4{
5	public static void main(String[] args)
6	{
7		// creating a My HashTable Dictionary
8		Hashtable<String, String> my_dict = new Hashtable<String, String>();
9
10    // Using a few dictionary Class methods
11		// using put method
12		my_dict.put("01", "Apple");
13		my_dict.put("10", "Banana");
14		
15		// using get() method
16    System.out.println("\nValue at key = 10 : " + my_dict.get("10")); 
17    System.out.println("Value at key = 11 : " + my_dict.get("11"));
18		
19		// using isEmpty() method
20    System.out.println("\nIs my dictionary empty? : " + my_dict.isEmpty() + "\n");
21		
22		// using remove() method 
23		// remove value at key 10
24    my_dict.remove("10");
25    System.out.println("Checking if the removed value exists: " + my_dict.get("10")); 
26    System.out.println("\nSize of my_dict : " + my_dict.size()); 
27	}
28} 

1Map<String, String> map = new HashMap<String, String>();
2map.put("dog", "type of animal");
3System.out.println(map.get("dog"));