Chapter 6, Problem 16E

Explanation of Solution

Program code:

commonNames.java

//import the required packages

import java.io.File;

import java.util.Arrays;

import java.util.Scanner;

//define a class commonNames

public class commonNames

{

    //define the main

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

    {

//create the object of File class

File fileName = new File("file.txt");

//create the object of Scanner class to refer the file

Scanner input = new Scanner(fileName);

//call the method mostCommonNames()

mostCommonNames(input);

    }

//define the method mostCommonNames()

public static int mostCommonNames(Scanner input)

{

//declare an integer variable

int uniqueName=0;

//itrerate while loop to get the lines of the file

while(input.hasNextLine())

{

//create a string variable and get the lines to it

String line=input.nextLine();

//create the variable of Scanner

Scanner console=new Scanner (line);

//create a string and get the tokens to it

String last=console.next();

//increment the variable uniqueName by 1

uniqueName++;

//create a string variable and assign last to it

String commonWord=last;

//create two integer variables

int mostCommon=1;

int count=1;

//iterate a while loop to get the tokens

while(console.hasNext()

{

//create a string variable current and get the token to it

    String current=console.next();

//if the value of current and last are equal

    if(current.equals(last))

    {

        //increment the count by 1

        count++;

    }

//if the value of current and last are not equal

    else

    {

//if the count is greater than mostCommon

        if(count>mostCommon)

        {

//Assign the value of count to mostCommon

            mostCommon=count;

//Assign the value of last to mostCommon

            commonWord=last;

        }

        //set the value of count as 1

        count=1;

//increment the value of uniqueName by 1

        uniqueName++;

    }

    //assign the value of current to last

    last=current;

}

//if count is greater than mostCommon

if(count>mostCommon)

{

    //assign last to commonWord

    commonWord=last;

}

        //print the commonWord

System...