Question

Write an application that counts the words in a String entered by a user as part of the main method. Words are separated by any combination of spaces, periods, commas, semicolons, question marks, exclamation points, or dashes. Save the file as CountWords.java.. Again, Don’t forget to create the application/project CountWordsTest.java Class that has the main method with input from the user and an object to use the CountWords class.

Answer 1

---------------------------------------CountWords.java-------------------------------------

class CountWords

{

    public int count(String str)

    {

        // split the string

        String[] arr = str.split(" |\\t|,|;|\\.|\\?|!|-|:|@|\\[|\\]|\\(|\\)|\\{|\\}|_|\\*|/");

   

        int i, x = 0;

       

        for( i = 0 ; i < arr.length ; i++ )

        {

            // if the length of current element is greater than 0

            if( arr[i].length() > 0 )

                x++;

        }

       

        return x;

    }

}

---------------------------------------------CountWordsTest.java------------------------------------

import java.util.*;

public class CountWordsTest

{

    public static void main(String[] args)

    {

        CountWords ob = new CountWords();

       

        // create a Scanner objects

        Scanner sc = new Scanner(System.in);

       

        System.out.print("Enter the string : ");

        String str = sc.nextLine();

       

        int x = ob.count(str);

       

        System.out.println("Number of words : " + x);

    }

}

Sample Output

C:AUsers\userDesktop javac CountWordsTest.java C:\Users\user\Desktop〉Java Coun two rdsTest Enter the string HiIaChandler Bing.- Am i funny??? My wife is monica. umber of words : 12