Write a program to count each unique words in a given string.

1. public class WordCountByMapAlgoritham {
2. 
   
3. public static void main(String[] args) {
4. String s = "this is java code. this java code is highly recommended for java developer !!";
5. String a[] = s.split(" ");
6. Map<String, Integer> map = new HashMap<String, Integer>();
7. 
   
8. for (String word : a) {
9. if (map.get(word) != null) {
10. map.put(word, map.get(word) + 1);
11. } else
12. map.put(word, 1);
13. }
14. System.out.println(map);
15. }
16. }

Output: 

{!!=1, java=3, code=1, code.=1, this=2, for=1, is=2, developer=1, highly=1, recommended=1}