import java.io.*;
import java.util.*;

public class Main {

	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);
		System.out.print("Input the file pathname: ");
		String fname = in.next();

		try {
			Scanner inFile = new Scanner(new File(fname));
			int x = inFile.nextInt();
			if (x < 0)
				throw new NegativeIntegerException("-ve number");

			System.out.println("Data is: " + x);
			inFile.close();
		} catch (FileNotFoundException e) {
			System.out.println("Cannot open ...");
		} catch (InputMismatchException e) {
			System.out.println("Cannot read ...");
		} catch (NegativeIntegerException e) {
			System.out.println(e.getMessage());
		}
		in.close();
	}
}