switchMd

import java.util.Scanner;
public class switchMd {
    public static void main(String[] args){
        Scanner in = new Scanner(System.in);
        int d,m;
        System.out.print("Enter month: ");
        m = in.nextInt();
        switch(m){
            case -1:
                System.out.print("good bye");
            break;
            default:
                System.out.print("Enter day: ");
                d = in.nextInt();
                switch(m){
                    case 2:
                        if(d>=28){
                            m+=1;
                            d=1;
                        }else{
                            d+=1;
                        }
                    break;
                    case 4:
                    case 6:
                    case 9:
                    case 11:
                        if(d>=30){
                            m+=1;
                            d=1;
                        }else{
                            d+=1;
                        }
                    break;
                    case 12:
                        if(d>=31){
                            m=1;
                            d=1;
                        }else{
                            d+=1;
                        }
                    break;
                    default:
                        if(d>=31){
                            m+=1;
                            d=1;
                        }else{
                            d+=1;
                        }
                }
                System.out.printf("Next day: %02d/%02d",m,d);
        }

    }
}