Chapter 7, Problem 19E

Explanation of Solution

Method “wordLengths()” to print the “*” for the words containing each number of letters.

//Import required packages

import java.io.File;

import java.io.FileNotFoundException;

import java.io.FileReader;

import java.util.Scanner;

//Definition of class Test

public class Test

{

    //Definition of main class

    public static void main(String[] args) throws FileNotFoundException

    {

        //Open the file

Scanner input=new Scanner(new FileReader("input.txt"));

        //Call the method transpose

        wordLengths(input);

    }

    //Definition of method wordLengths

    public static void wordLengths(Scanner infile)

            throws FileNotFoundException

    {

        //Create an array

        int[] arr = new int[100];

        int size = 0;

        String tok;

//While loop to retrieve the words from the file

        while(infile.hasNext())

        {

            //Store the words in the variable "tok"

            tok = infile.next();

            //Increment the array size

            arr[tok.length()]++;

//Check whether the length is greater than size

            if(tok.length() > size)

                //Assign length to the size

                size = tok...