数学方法生成六位随机数

package util;
/**
 * 生成6位随机数
 * @author Administrator
 *
 */
public class RanNum {
    public int getYzm(){
        return (int) (Math.random()*899999+100000);
    }
    public static void main(String[] args) {
        System.out.println(new RanNum().getYzm());
    }
}