两个随机数实例

/*

import java.util.Random;

public class random_1{

    public static void main(String[] args) {

        Random r=new Random();

        int a=r.nextInt();

        System.out.print("随机数为："+a);

    }

}

*/

//以下程序与上程序效果一样

public class random_1{

    public static void main(String[] args) {

        int r=(int)(Math.random()*10);

        System.out.print(r);

    }

}