я еще не дорешал задачу, пока просто пытаюсь понять, почему массив на распечатку не выходит.
package com.javarush.task.task18.task1819;
/*
Объединение файлов
*/
import java.io.*;
public class Solution {
public static void main(String[] args) throws IOException {
BufferedReader reader1=new BufferedReader(new InputStreamReader(System.in));
String file1=reader1.readLine();
String file2=reader1.readLine();
FileInputStream inputStream1=new FileInputStream(file1);
FileOutputStream outputStream=new FileOutputStream(file1);
FileInputStream inputStream2=new FileInputStream(file2);
byte[] buffer1=new byte[inputStream1.available()];
while (inputStream1.available()>0){int count1=inputStream1.read(buffer1);}
inputStream1.close();
byte[] buffer2=new byte[(int)inputStream2.available()];
while (inputStream2.available()>0){int count2=inputStream2.read(buffer2);}
inputStream2.close();
reader1.close();
for(int e:buffer1){
System.out.print(e+" ");
}
}
}