随机数据（初学）

package day01;


import java.util.Random;

public class Case07 {
    public static void main(String[] args) {
        Random random =new Random();
        int num=random.nextInt();//int范围内
        int num1=random.nextInt(10);//[0,10)
        System.out.println(num);
        System.out.println(num1);
    }
}