Time + 15 min / Java

package ConditionalStatementsExcercises;

import java.util.Scanner;

public class TimeAnd15Min {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        int h = Integer.parseInt(scanner.nextLine());
        int m = Integer.parseInt(scanner.nextLine());

        int mm = m + 15;

        if (mm > 59) {
            mm = mm % 60;
            h = h + 1;
        }

        if (h > 23) {
            h = h -24;
        }

        System.out.printf("%d:%02d", h, mm);
    }
}