3 стенография

package zaschita1;
import java.io.File;
import java.util.Scanner;
import java.io.FileWriter;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.ArrayList;
import java.util.List;

public class Zaschita1 {

    static char[] russAlph = {'а', 'г', 'е', 'о', 'п', 'р', 'с', 'у', 'х', 'А', 'В', 'Е', 'К', 'М', 'Н', 'О', 'Р', 'С', 'Т', 'Х'};
    static char[] engAlph = {'a', 'r', 'e', 'o', 'n', 'p', 'c', 'y', 'x', 'A', 'B', 'E', 'K', 'M', 'H', 'O', 'P', 'C', 'T', 'X'};

public static void encoding() throws Exception{ // ok
        System.out.print("Encoding: \n");

        Scanner sc = new Scanner(new File("src//zaschita1//input_word.txt"));
        String word = sc.nextLine();
        System.out.println("Phrase: " + word);

        String[] binAscii = new String[word.length()];
        for (int i = 0; i < binAscii.length; i++ ){
            binAscii[i] = String.format("%16s", Integer.toBinaryString((int) word.charAt(i))).replace(' ', '0');
            System.out.println(word.charAt(i) + " " + (int) word.charAt(i) + " " + binAscii[i]);
        }

        StringBuilder binAsciiConcat = new StringBuilder();//add
        int binAcounter = 0;// add суммарно сколько в слове бит
        for(int i = 0; i < binAscii.length; i ++){//add
            binAsciiConcat.append(binAscii[i]);//add
        }

        //List<String> lines = Files.readAllLines(Paths.get("src//zaschita1//input_text.txt"), StandardCharsets.UTF_8);
        List<String> lines = Files.readAllLines(Paths.get("src//zaschita1//input_text.txt"), StandardCharsets.UTF_8);
        List<StringBuilder> sb = new ArrayList<StringBuilder>(lines.size());
        for(int i = 0; i < lines.size(); i ++){
            sb.add(i, new StringBuilder(lines.get(i)));
        }

        FileWriter writer = new FileWriter("src//zaschita1//output.txt", false);

        System.out.println("binCodeConcat: " + binAsciiConcat.toString() + "     " + binAsciiConcat.toString().length());

        for(int i = 0; i < lines.size(); i ++){
            for(int j = 0; j < lines.get(i).length(); j ++){
                here:
                for(int k = 0; k < russAlph.length; k ++){
                    if(lines.get(i).charAt(j) == russAlph[k] && (binAcounter < binAsciiConcat.toString().length())){ // есть русская буква-перевертыш
                        if(binAsciiConcat.toString().charAt(binAcounter) == '1'){ // = 1
                            if(binAcounter == 47) System.out.println("ij: " + i + j);
                            sb.get(i).replace(j, j + 1, String.valueOf(engAlph[k]));
                        }
                        binAcounter++;
                        break here;
                    }
                }
                if(binAcounter == binAsciiConcat.toString().length()){
                    sb.get(i).insert(j + 1, '\u200B');
                    binAcounter++;
                }
            }
            writer.append(sb.get(i).toString() + '\n'); //добавляем строку
        }

        writer.flush();
        System.out.println("u: " + sb.get(5).toString().indexOf('\u200b'));//"sym: " + sb.get(5).toString().charAt(1));
        System.out.println("sym: " + sb.get(5).toString().charAt(6));
        System.out.println("sym: " + lines.get(5).charAt(6));
        System.out.println("eng" + (int)(sb.get(5).toString().charAt(6)));
        System.out.println("rus" + (int)(lines.get(5).charAt(6)));
        System.out.println("rus" + (int)('В'));

    }
    public static void decoding() throws Exception{
        System.out.println("\nDecoding: ");
        List<String> lines = Files.readAllLines(Paths.get("src//zaschita1//output.txt"), StandardCharsets.UTF_8);
        StringBuilder sb = new StringBuilder();

        for(String line: lines){
            sb.append(line);
        }

        int indexU200B = sb.toString().indexOf('\u200B');
        int sbLength = sb.toString().length();
        sb.delete(indexU200B, sbLength);

        //System.out.println("sb: " + sb.toString());

        //FileWriter writerOutput = new FileWriter("src/com/company/output_word.txt", false);
        //writerOutput.write(sb.toString());
        //writerOutput.flush();

        StringBuilder resBool = new StringBuilder();
        while(sb.toString().indexOf(' ') != -1){ // пока есть пробелы
            if(sb.toString().charAt(sb.toString().indexOf(' ')) == sb.toString().charAt(sb.toString().indexOf(' ') + 1)){
                resBool.append('1');
                sb.delete(0, sb.toString().indexOf(' ') + 2);
            }
            else {
                resBool.append('0');
                sb.delete(0, sb.toString().indexOf(' ') + 1);
            }
            //System.out.println("остаток:" + sb.toString());
        }
        //System.out.println(resBool.toString());



        int start = 0, end = 16;
        int[] asciiCode = new int[resBool.toString().length() / 16];

        StringBuilder res = new StringBuilder();
        for (int i = 0; i < asciiCode.length; i++ ){
            asciiCode[i] = (char)Integer.parseInt(resBool.toString().substring(start, end), 2);
            start += 16;
            end += 16;
            System.out.println("code: " + asciiCode[i]);
            res.insert(res.length(), (char)asciiCode[i]);
            //System.out.println("char: " + res.toString());
        }

        FileWriter writerOutput = new FileWriter("src//zaschita1//output_word.txt", false);
        writerOutput.write(res.toString());
        writerOutput.flush();

    }

    public static void main(String[] args) throws Exception{
        encoding();
        //decoding();
    }

}