Chapter 7, Problem 3PE

a.

Explanation of Solution

Program:

File name: “CountSpaces.java”

//Define a class named CountSpaces

public class CountSpaces

{

    //Define main method

    public static void main(String[] args)

    {

        //Read a String that holds an inspirational quote

        String aString =

        "The best and most beautiful things in the world " +

"cannot be seen or even touched - they must be felt with the heart.";

        //Declare the variables and initialize the value

        int numSpaces = 0;

        int stringLength = aString...

b.

Explanation of Solution

Program:

File name: “CountSpaces2.java”

//Import necessary header files

import java.util.*;

//Define a class named CountSpaces2

public class CountSpaces2

{

    //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 and initialize the value

        String aString;

        int stringLength;

        int numSpaces = 0;

        //Prompt the user to enter an inspirational quote

        System.out.print("Enter an inspirational quote >> ");

        aString = in.nextLine();

        //Read the length of the string

        stringLength = aString...