import
java.util.Random;
public class RandomTest {
public static void main(String[] args) {
StringBuilder str=new StringBuilder();//定义变长字符串
Random random=new Random();
//随机生成数字，并添加到字符串
for(int i=0;i<8;i++){
str.append(random.nextInt(10));
}
//将字符串转换为数字并输出
int num=Integer.parseInt(str.toString());
System.out.
PRintln(num);
}
}
