Chapter 6, Problem 13E

Explanation of Solution

Program code:

JavaStripper.java

//import the required packages

import java.io.File;

import java.util.Arrays;

import java.util.Scanner;

//define a class JavaStripper

public class JavaStripper

{

//define the main

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

{

//create the object of File class

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

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

Scanner inFile = new Scanner(fileName);

//call the method stripComments()

stripComments(inFile);

    }

//define a method stripComments()

public static void stripComments(Scanner inFile) throws Exception

{

//create a string variable inputstring

String inputstring = "";

//iterate a while loop

while (inFile.hasNextLine())

{

    //read the line to inputstring

inputstring = inputstring + " \n " + inFile.nextLine();

}

//create a character array

char[] inputchar = inputstring.toCharArray();

//create an integer variable

int nCommentBegin = 0;

//create a boolean variable

boolean IsLineCommentOpen = false;

//iterate a for loop

for(int i = 0; i<inputchar.length; i++)

{

    //if the condition is true

    if(inputchar[i] == '/' && inputchar[i+1] == '*')

    {

        //set as starting of comment

        nCommentBegin = i;

    }

    //else condition

else if(inputchar[i] == '*' && inputchar[i+1] == '/')

    {

        //remove the comments within /* */

char[] str2Remove = Arrays.copyOfRange(inputchar, nCommentBegin,(i+2));

        //set the value of inputstring

inputstring = inputstring.replace(new String(str2Remove), "");

    }

    //else condition

else if(inputchar[i] == '/' && inputchar[i+1] == '/')

    {

        //set as the beggning of single line comment

        nCommentBegin = i;

        IsLineCommentOpen = true;

    }

    //else if the character is \n

    else if(inputchar[i] == '\n')

    {

        //checks the va

        if(IsLineCommentOpen)

        {

            //set the value of str2Remove

char[] str2Remove = Arrays.copyOfRange(inputchar, nCommentBegin,i);

//call the replace() method

inputstring = inputstring.replace(new String(str2Remove), "");

//set the value of IsLineCommentOpen to false

IsLineCommentOpen = false;

        }

        }

}

//print the inputstring

System...