วอนผู้รู้ช่วยทีครับ มือใหม่หัดเขียนโปรแกรม Java ฝากด้วยครับ

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Scanner;

class java2 {
    /**
     * @param args the command line arguments
     */
    public static void main(String[] args)
    {
        // TODO code application logic here
        Scanner input = new Scanner (System.in);

        List<Integer> ood = new ArrayList<>();
        List<Integer> even = new ArrayList<>();

        for(int i = 0; i < 8; i++) {
            System.out.printf("Enter number[%d]: ",i);
            Integer num = input.nextInt();

            if (num % 2 == 0) {
                even.add(num);
            } else {
                ood.add(num);
            }
        }

        System.out.printf("Maxeven is %d%n", Collections.max(even));
        System.out.printf("Mineven is %d%n", Collections.min(even));
        System.out.printf("Maxood is %d%n", Collections.max(ood));
        System.out.printf("Minood is %d%n", Collections.min(ood));
    }
}