В среде IJ все работает как надо...
помощь зала ((
package com.javarush.task.task18.task1818;
/*
Два в одном
*/
import java.io.*;
public class Solution {
public static void main(String[] args) throws IOException {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
FileInputStream fis1 = new FileInputStream(br.readLine());
FileOutputStream out = new FileOutputStream("c:/temp/txt.txt");
while (fis1.available()> 0){
int data = fis1.read();
out.write(data);
}
FileInputStream fis2 = new FileInputStream(br.readLine());
FileOutputStream out1 = new FileOutputStream("c:/temp/txt.txt", true);
while (fis2.available() > 0){
int data = fis2.read();
out1.write(data);
}
FileInputStream fis = new FileInputStream(br.readLine());
while (fis.available() > 0){
int data = fis.read();
System.out.print((char)data);
}
fis.close();
fis1.close();
fis2.close();
out.flush();
out.close();
out1.flush();
out1.close();
}
}