package inner.ru;

import java.io.File;

public class Check {
     private final File file = new File("src//inner//file//hello.txt");

    public void print() {
        System.out.println(file.exists());
    }
}

package external.main;

 import inner.ru.Check;

 public class Main {

     /**
     * @param args the command line arguments
     */
     public static void main(String[] args) {
         Check check = new Check();
         check.print();
     }

}

private final File file = new File("src//inner//file//hello.txt");

public void print() {
    try (final InputStream stream = Check.class.getResourceAsStream("/inner/file/hello.txt")) {
        java.util.Scanner s = new java.util.Scanner(stream);
        while (s.hasNext()) {
            System.out.println(s.nextLine());
        }
    } catch (IOException ex) {
        System.out.println("File doesn't exist");
    }
}