I have the following program in Java

import java.io.BufferedReader;

import java.io.File;

import java.io.FileReader;

import java.io.IOException;

import java.util.ArrayList;

import java.util.List;

import java.util.Scanner;

public class FileEdit{

public static List lines = new ArrayList();

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

{

Scanner s = new Scanner(System.in);

System.out.print("Input file: ");

String fileName = s.nextLine();

BufferedReader br = new BufferedReader(new FileReader(new File(fileName)));

String str="";

int count=0;

while((str=br.readLine())!=null)

{

lines.add(count, str);

System.out.println((++count) + "> "+ str);

}

String text="";

String command = "";

System.out.print((++count)+"> ");

command=s.nextLine();

String commandArr[];

int flag;

while(!command.equals("E"))

{

flag=0;

commandArr = command.split("\\s");

if(commandArr[0].equals("I")) //Insertion

{

while(true)

{

if(commandArr.length==1&&flag!=2)

{

System.out.print((count)+"> ");

text = s.nextLine();

insertLine(text,count-1);

}

else if(commandArr.length==2&&flag!=2)

{

System.out.print((commandArr[1])+"> ");

count=Integer.parseInt(commandArr[1]);

text = s.nextLine();

insertLine(text,Integer.parseInt(commandArr[1])-1);

}

else

insertLine(text,count-1);

System.out.print((++count)+"> ");

command=s.nextLine();

commandArr = command.split("\\s");

if(commandArr[0].equals("I")||commandArr[0].equals("L")||commandArr[0].equals("D")||commandArr[0].equals("E"))

{

flag=1;

break;

}

else

{

flag=2;

text=command;

}

}

}

else if(commandArr[0].equals("L")) //Listing

{

printList();

}

else if(commandArr[0].equals("D")) //Deletion

{

if(commandArr.length==1)

{

deleteLine(count-1,count-1);

}

else if(commandArr.length==2)

{

deleteLine(Integer.parseInt(commandArr[1])-1,Integer.parseInt(commandArr[1])-1);

}

else if(commandArr.length==3)

{

deleteLine(Integer.parseInt(commandArr[1])-1,Integer.parseInt(commandArr[2])-1);

}

count=lines.size();

}

if(flag!=1)

{

System.out.print((count++)+"> ");

command = s.nextLine();

}

}

}

public static void insertLine(String text,int count)

{

lines.add(count,text);

}

public static void deleteLine(int start,int end)

{

for(int i=start;i<=end;i++)

lines.remove(i);

}

public static void printList()

{

for(int i=0;i

System.out.println((i+1)+"> "+lines.get(i));

}

}

I need to add an Append commande to the file editor by keying in A. This will allow the user to add more to the current line of the array list.

I also need to save the changed file to nex .txt file called textout.txt

The output will just be lines of text that have not been edited out for example:

The first line

The second line

One more line

And another line

Here is the original assignment so you can better understand.

I need a program written in Java.

Write a simple line editor. Keep the entire text in an ArrayList object, one line in a separate index position. Start the program with entering EDIT file, after which a prompt appears along with the line number. If the letter I is entered with a number n following it, then insert the text to be followed on line n. If I is not followed by a number, then insert the text on the current line. If D is entered with two numbers n and m,one n, or no number then delete lines n through m, line n, or the current line. Do the same with command L, which stands for listing lines. If A is entered, then append the text to the existing lines or the last line. Entry E signifies exit and saving a text file.

Example:

Input file: textin.txt

The first line

And another line

EDIT testin

1>The first line

2>

3> And another line

4> I 3

3> The second line

4> One more line

5> L

1>The first line

2>

3> The second line

4> One more line

5> And another line // This is now line 5, not 3

5> D 2 // line 5, since L was issued form line 5

4> L // line 4, since one line was deleted

1>The first line

2> The second line

3> One more line

4> And another line

5>D 2 4

4>L

1>The first line

2>A

1> not done yet

2> L

1>The first line not done yet

2> E

Output File: textout.txt

The first line not done yet // the line that are left or changed after entering E must be saved in new text file. textout.txt