need hint
package com.codegym.task.task18.task1826;
/*
Encryption
*/
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Base64;
public class Solution {
public static void main(String[] args) throws IOException {
String fileName = args[1];
FileInputStream fis = new FileInputStream(fileName);
String fileOutputName = args[2];
FileOutputStream fos = new FileOutputStream(fileOutputName);
if(args[0].equalsIgnoreCase("-d")){
fos.write(Base64.getDecoder().decode(fileName.getBytes()));
}
if(args[0].equalsIgnoreCase("-e")){
fos.write(Base64.getEncoder().encode(fileName.getBytes()));
}
fis.close();
fos.close();
}
}