mongodb.countDocument.java Source code

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Here is the source code for mongodb.countDocument.java

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/*
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 */
//
//Counting the Number of Documents Represented by a Cursor in Java

package mongodb;

import com.mongodb.BasicDBObject;
import com.mongodb.DB;
import com.mongodb.DBCollection;
import com.mongodb.MongoClient;
import java.util.ArrayList;

/**
 *
 * @author soham
 */
public class countDocument {
    public static void main(String[] args) {
        try {
            MongoClient mongoClient = new MongoClient("localhost", 27017);
            DB db = mongoClient.getDB("words");
            DBCollection collection = db.getCollection("word_stats");
            countDocument.countWords(collection);
        } catch (Exception e) {
            System.out.println(e);
        }
    }

    public static void countWords(DBCollection collection) {
        Integer count = collection.find().count();
        System.out.println("Total words in the collection: " + count);
        ArrayList<Character> letter = new ArrayList<Character>();
        BasicDBObject query;
        /*query = new BasicDBObject("first", "a");
        count = collection.find(query).count();
        System.out.println("Total words starting with A: " + count);
        */

        for (int i = 97; i <= 122; i++) {

            letter.add((char) i);
        }
        String[] chr = { "a", "b", "c", "d", "e", "f", "g", "h" };
        for (int i = 0; i < letter.size(); i++) {
            query = new BasicDBObject("first", letter.get(i));
            count = collection.find(query).count();
            System.out.println("Total words starting with " + letter.get(i) + ": " + count);
        }
    }
}