ProgBasicsJavaBook1.0FirstSteps03Nums1to20

import java.util.Scanner;

public class Main {

    public static void main(String[] args) {

        System.out.println(1);
        System.out.println(2);
        System.out.println(3);
        System.out.println(4);
        System.out.println(5);
        System.out.println(6);
        System.out.println(7);
        System.out.println(8);
        System.out.println(9);
        System.out.println(10);
        System.out.println(11);
        System.out.println(12);
        System.out.println(13);
        System.out.println(14);
        System.out.println(15);
        System.out.println(16);
        System.out.println(17);
        System.out.println(18);
        System.out.println(19);
        System.out.println(20);
    }
}