package lianxi;

public class Print_1 {

    int x;

    Print_1(int x) {

        this.x = x;

    }

    void outPut() {

        String a = "abcdefghijklmnopqrstuvwxyz";

        if (x == 1) {

            System.out.println(a.toUpperCase());

        }

        else if (x == 2) {

            System.out.println(a);

        }

        else {

            System.out.println("不可执行");

        }

    }

    public static void main(String[] args) {

        Print_1 Print1 = new Print_1(1);

        Print1.outPut();

        Print_1 Print2 = new Print_1(2);

        Print2.outPut();

        Print_1 Print3 = new Print_1(3);

        Print3.outPut();

    }

}