Read the \"reverse.txt\" file, one line at a time. Print the line reversed. Use

Question

Read the "reverse.txt" file, one line at a time.

Print the line reversed.

Use arraylists.

you cannot use the collections "reverse" method, create your own or put it in code inside a loop.

HINT: use ".add" to re-arrange elements in an arraylist

10 bonus points: use a two dimensional ArrayList of String to read the entire file at once, instead of one line at a time.

import java.io.File;
import java.io.FileNotFoundException;
import java.io.PrintWriter;
import java.util.Scanner;


/*
Open the reverse.txt file

*/
public class ReverseFileContents
{
   public static void main(String[] args) throws FileNotFoundException
   {
//
//
//You need to open the "reverse.txt" file here
//
//
//
         while ( inputFile.hasNextLine())
         {
//
//Inside the while loop you will get the line of text
//   one line at a time.
//
//Next, you will reverse the line and print out the "string"
//   of characters on the screen for each line
//   to reveal the ACM code of ethics.
//
         }         
   }
}

Explanation / Answer

import java.io.File; import java.io.FileNotFoundException; import java.io.PrintWriter; import java.util.*; class ReverseFileContents { public static void main(String[] args) throws FileNotFoundException { Scanner inputFile = new Scanner(new File("reverse.txt")); ArrayList list = new ArrayList(); while(inputFile.hasNext()) { list.add(inputFile.nextLine()); String s = list.get(list.size()-1); for(int i=s.length()-1; i>=0; i--) System.out.print(s.charAt(i)+" "); System.out.println(); } inputFile.close(); } }

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