import java.util.Scanner;

public class PrintBackwardsExample {
	static Scanner sc = new Scanner(System.in);

	public static void printRecur() {
		System.out.print("Enter value (-999 to stop): ");
		int val = sc.nextInt();
		if (val!=-999) {
			printRecur();
			System.out.print(val + ", ");
		}
		//NOTE: You get an extra comma at the end this way.
		//      Can you think of a way to avoid this?
	}


	public static void main(String[] args) {
		printRecur();
	}

}


//Copyright 2016 Evan Golub