помощь
package com.javarush.task.task18.task1826;
/*
Шифровка
*/
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
public class Solution {
public static void main(String[] args) throws IOException {
switch (args[0]){
case ("-e"):{
FileInputStream input = new FileInputStream(args[1]);
FileOutputStream output = new FileOutputStream(args[2]);
byte[] buff = new byte[input.available()];
input.read(buff);
for (int i = 0; i < buff.length; i++) {
buff[i]= (byte) (buff[i]+1);
}
output.write(buff);
input.close();
output.close();
}
case ("-d"):{
FileInputStream input = new FileInputStream(args[1]);
FileOutputStream output = new FileOutputStream(args[2]);
byte[] buff = new byte[input.available()];
input.read(buff);
for (int i = 0; i < buff.length; i++) {
buff[i]= (byte) (buff[i]-1);
}
output.write(buff);
input.close();
output.close();
}
}
}
}