Не найден метод "readAllBytes()" в переменной "inputStream1"
package com.javarush.task.task18.task1819;
/*
Объединение файлов
*/
import java.io.*;
public class Solution {
public static void main(String[] args) throws IOException {
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
String file1 = reader.readLine();
String file2 = reader.readLine();
reader.close();
FileInputStream inputStream1 = new FileInputStream(file1);
FileInputStream inputStream2 = new FileInputStream(file2);
FileOutputStream outputStream = new FileOutputStream(file1, true);
byte[] buff1 = inputStream1.readAllBytes();
byte[] buff2 = inputStream2.readAllBytes();
inputStream1.close();
inputStream2.close();
PrintStream printStream = new PrintStream(file1);
printStream.write(new byte[0]);
outputStream.write(buff2);
outputStream.write(buff1);
inputStream1.close();
inputStream2.close();
outputStream.close();
}
}