问Java要求我创建一个我已经创建的方法

EN

package hw3;

import java.util.Random;

//Zephram Foster, Homework 3, 10-12

public class randomLottery {

    int num[];
    int ball;
    int high;


    public static int generateRandomInt(int upperRange){

        Random random = new Random();
        return random.nextInt(upperRange);
    }

}


package hw3;
import java.util.Scanner;
public class randomMain {

    public static void main(String[] args)
    {
        Scanner sc = new Scanner(System.in);
        System.out.println("Enter the high number: ");
        //int high = sc.nextInt();
        //System.out.println(high);

        randomLottery rand = new randomLottery();
        rand.high = sc.nextInt();
        System.out.println(rand.high);

        rand.num[1] = generateRandomInt(rand.high);
    }

}