obscure

package ar223ni_assign4;

import java.io.*;
import java.util.Scanner;

public class ObscureLovecraft {
    public static void main(String[] args) throws IOException {
        //Add all my scanners and the filepaths
        Scanner sc = new Scanner(System.in);
        File testFile = new File("C:\\Users\\Greattech\\Downloads\\lovecraft.txt");
        FileReader fileReader = new FileReader("C:\\Users\\Greattech\\Downloads\\lovecraft.txt");
        int input = 0;
        //Test if the file lovecraft.txt exists, otherwise throw exception
        try{
            if(!testFile.exists()){
                throw new IOException("File does not exist");
            }
        }
        catch(IOException e){
            System.out.println(e.getMessage());
        }
        //See what the user wants to do, pick a method depending on the input
        System.out.println("Obscure");
        System.out.println("========");
        System.out.println("1. Make obscure");
        System.out.println("2. Make readable");
        System.out.println("3. print obscure");
        System.out.println("4. print readable");
        System.out.println("0. EXIT");
        input = sc.nextInt();
        try{
            if(input < 0 || input > 4){
                throw new IllegalArgumentException("That is not an option.");
            }
        }
        catch(IllegalArgumentException e){
            System.out.println(e.getMessage());
            input = sc.nextInt();
        }
        while(input != 0){ //if it is 0 then the code stops running
            System.out.println("===> " + input);
            if(input == 1){ //call method one --> makeObscure()
                makeObscure();
            }
            else if(input == 2){ //call method two --> makeReadable()
                makeReadable();
            }
            else if(input == 3){ //call method three --> printObscure()
                printObscure();
            }
            else if(input == 4){ //call method four --> printReadable()
                printReadable();
            }
            System.out.println("Done");
            System.out.println(" ");
            System.out.println("Obscure");
            System.out.println("========");
            System.out.println("1. Make obscure");
            System.out.println("2. Make readable");
            System.out.println("3. print obscure");
            System.out.println("4. print readable");
            System.out.println("0. EXIT");
            input = sc.nextInt();
        }
        System.out.println("Bye Bye!!");
    }

    public static void makeObscure() throws IOException {
        File obscure = new File("C:\\Users\\Greattech\\Downloads\\obscure.txt");
        FileReader fileReader = new FileReader("C:\\Users\\Greattech\\Downloads\\lovecraft.txt");
        Scanner readFile = new Scanner(fileReader);
        String currentRow = "";
        String newRow = "";
        int ascii = 0;
        char newchar;

        try{
            if(!obscure.exists()){
                obscure.createNewFile();
            }else{
                //File already exists
            }
        } catch (IOException e) {
            e.printStackTrace();
        }


        PrintWriter printWriter = new PrintWriter(obscure);
        while(readFile.hasNextLine()){
            currentRow = readFile.nextLine();
            if(currentRow.isEmpty()){
                printWriter.print("\n");
            }
            else {
                for (int i = 0; i < currentRow.length(); i++) {
                    if(i == currentRow.length() - 1){
                        printWriter.println();
                    }
                    else{
                        ascii = (int) currentRow.charAt(i);
                        ascii += 3;
                        newchar = (char) ascii;
                        printWriter.print(newchar);
                    }
                }
            }

        }
    }

    public static void makeReadable() throws IOException {
        File readable = new File("C:\\Users\\Greattech\\Downloads\\readableLovecraft.txt");
        File obscure = new File("C:\\Users\\Greattech\\Downloads\\obscure.txt");
        FileReader fileReader = new FileReader("C:\\Users\\Greattech\\Downloads\\obscure.txt");
        boolean read = false;
        Scanner readFile = new Scanner(fileReader);
        String currentRow = "";
        String newRow = "";
        int ascii = 0;
        char newChar;
        try{
            if(!obscure.exists()){
                //Keep it at false
            }
            else{
                //Turn it to true and starting reading the file
                if(!readable.exists()){
                    readable.createNewFile();
                }
                else {
                    read = true;
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }

        PrintWriter printWriter = new PrintWriter(readable);

        while(read && readFile.hasNextLine()){
            currentRow = readFile.nextLine();
            if(currentRow.isEmpty()){
                printWriter.print("\n");
            }
            else {
                for (int i = 0; i < currentRow.length(); i++) {
                    if(i == currentRow.length() -1){
                        printWriter.println();
                    }
                    else{
                        ascii = (int) currentRow.charAt(i);
                        ascii -= 3;
                        newChar = (char) ascii;
                        printWriter.print(newChar);
                    }
                }
            }
        }
    }

    public static void printObscure() throws FileNotFoundException {
        File obscure = new File("C:\\Users\\Greattech\\Downloads\\obscure.txt");
        FileReader fileReader = new FileReader("C:\\Users\\Greattech\\Downloads\\obscure.txt");
        Scanner readFile = new Scanner(fileReader);
        String currentRow = "";
        //throw exception????
        while(readFile.hasNextLine()){
            currentRow = readFile.nextLine();
            System.out.println(currentRow);
        }
    }

    public static void printReadable() throws FileNotFoundException {
        File readble = new File("C:\\Users\\Greattech\\Downloads\\readableLovecraft.txt");
        FileReader fileReader = new FileReader("C:\\Users\\Greattech\\Downloads\\readableLovecraft.txt");
        Scanner readFile = new Scanner(fileReader);
        String currentRow = "";
        //throw exception?????
        while(readFile.hasNextLine()){
            currentRow = readFile.nextLine();
            System.out.println(currentRow);
        }
    }
}