how to count frequency of a word present in hashtable using java

Question

I have a small assignment, where I have a in Hashtable format. Now I want to find a number of times a word is present in that.

Kindly guide me in this. thanks Edit#1

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

Edit #2

if(spam.containsKey(s)){
                                  int value = spam.get(s);
                                  value += 1;
                                  spam.put(s,value);
                              }else{
                                  spam.put(s,1);
                              }

Ok, I changed my code to this now. I will have the count of that word as a value.

Answer 1

You will always have 0 or 1 occurrences of a specific word since a Hashtable does not allow key duplicates.

If you do h.add("hi",1) and then h.add("hi",2) and then you do n = h.get("hi") you will get 2. And h will contain just one "hi" string as key.

Answer 2

A common assignment is to use a hash-table like the one you show for a slightly different problem: to find the word-frequencies in a section of text (typically given as a String). Are you perhaps confused by the wording of the assignment?

If my hypothesis is correct, then here is a small hint: you have to fill the hash table in such a way that the hash maps words (the keys in the hash table) to the frequence with which they occur in the text.