display top ten occuring most words in a file

[kashifjoseph]

i have a program which displays no of occurances of all words in a file and also sorts it according to the number of occurances

How can I display only the top 10 of them?

Here is my program:

import java.io.*; 
import java.util.*; 

public class HashMapEx {

    public static void main(String[] args) {         
        LinkedHashMap<String, Integer> wordcount =
                new LinkedHashMap<String, Integer>();
        try { 
            BufferedReader in = new BufferedReader(
                                      new FileReader("c:\\test\\sample.txt"));
            String str;

            while ((str = in.readLine()) != null) { 
                str = str.toLowerCase(); // convert to lower case 
                int idx1 = -1;

                for (int i = 0; i < str.length(); i++) { 

                    if  ((!Character.isLetter(str.charAt(i))) ||
                         (i + 1 == str.length())) { 

                        if (i - idx1 > 1) { 
                            if (Character.isLetter(str.charAt(i))) 
                                i++;
                            String word = str.substring(idx1 + 1, i);
                            if  (wordcount.containsKey(word)) { 
                                wordcount.put(word, wordcount.get(word) + 1);
                            } else { 
                                wordcount.put(word, 1);
                            } 
                        }          
                        idx1 = i;
                    } 
                } 
            } 
            in.close();
        } catch (Exception e) { 
            e.printStackTrace();
            System.exit(1);
        } 

        ArrayList<Integer> values = new ArrayList<Integer>();
        values.addAll(wordcount.values());

        Collections.sort(values, Collections.reverseOrder());

        int last_i = -1;

        for (Integer i : values) { 
            if (last_i == i) // without duplicates
                continue;
            last_i = i;

            for (String s : wordcount.keySet()) { 
                if (wordcount.get(s) == i) // which have this value  
                    System.out.println(s + ":" + i);
            } 
        } 
    } 
}

[sunde887]

Well if you sorted it, then you would display just the highest 10 results. If you sort it in reverse order(highest-lowest), the first 10 entries would be the items you want, otherwise it should be the last 10 entries.

[Junky]

pls help me with word occurances program

Duplicate post.

[DarrylBurke]

Duplicate post.

No, that's a cross post.

db