Если обернуть попытку обращения к файлу в блок try
try{
String sourceFileName = reader.readLine();
InputStream fileInputStream = getInputStream(sourceFileName);
}while (fileInputStream.available() > 0)InputStream fileInputStream = null;package com.javarush.task.task09.task0929;
import java.io.*;
/*
Обогатим код функциональностью!
*/
public class Solution {
public static void main(String[] args) throws IOException {
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
InputStream fileInputStream = null;
try {
String sourceFileName = reader.readLine();
InputStream fileInputStream = getInputStream(sourceFileName);
}
catch (IOException e){
System.out.println("Файл не существует");
String sourceFileName = reader.readLine();
InputStream fileInputStream = getInputStream(sourceFileName);
}
String destinationFileName = reader.readLine();
OutputStream fileOutputStream = getOutputStream(destinationFileName);
while (fileInputStream.available() > 0) {
int data = fileInputStream.read();
fileOutputStream.write(data);
}
fileInputStream.close();
fileOutputStream.close();
}
public static InputStream getInputStream(String fileName) throws IOException {
return new FileInputStream(fileName);
}
public static OutputStream getOutputStream(String fileName) throws IOException {
return new FileOutputStream(fileName);
}
}