Chapter 7, Problem 5PE

Explanation of Solution

Program:

File name: “CountWords.java”

//Import necessary header files

import java.util.*;

//Define a class named CountWords

public class CountWords

{

    //Define main method

    public static void main(String[] args)

    {

        //Create an object for the Scanner class

        Scanner in = new Scanner(System.in);

        //Declare the variables

        String str;

        char ch;

        int x;

        int count = 0;

        int length;

        //Declare a Boolean variable and initialize the value

        boolean previousCharWasPunc = false;

        //Prompt the user to enter a String

        System.out.print("Enter a string >> ");

        str = in.nextLine();

        //Read the length of the String

        length = str.length();

        //For loop is executed until x exceeds the string length

        for(x = 0; x < length; x++)

        {

            ch = str.charAt(x);

/* If the words are separated by any combination of spaces,

            periods, commas, semicolons, question marks,

            exclamation points, or dashes*/

            if(ch == ' ' || ch == '...