10.9zuoye

public class fulei {
    public fulei()
    {
        System.out.println("欢迎使用海尔");
    }
    public String Pinpai;
    public String Xinghao;
    public fulei(String pinpai, String xinghao)
    {
        this.Pinpai = pinpai;
        this.Xinghao = xinghao;
        System.out.println(Pinpai+"饮水机\n"+"型号为"+Xinghao);
    }
    int t = 0;
    public void reshui(int 时间)
    {
        t = 时间;
        if(t > 15&&t<20)
        {
             System.out.println("保温");
        }
        else
        {
            System.out.println("加热");
        }
    }
    public void xiaodu(int 时间1)
    {
        t = 时间1;
        if(t >= 20)
        {
            System.out.println("消毒");
        }
    }
}

public class zilei1 extends fulei
{
    public zilei1 (String Pinpai, String Xinghao)
    {
        super (Pinpai, Xinghao);
    }
    public zilei1()
    {
        String Pinpai = "美的";
        String Xinghao = "HB350";
        System.out.println("我是"+Pinpai+Xinghao);
    }
    int t;
    public void xiaodu(int t)
    {
        if(t > 65)
        {
            System.out.println("正在消毒");
        }
    }
}

public class test {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        fulei ysj1 = new fulei();
        fulei ysj = new fulei("Haier", "GB125");
            ysj.reshui(6);
            ysj.xiaodu(70);
            ysj.reshui(16);
            
        zilei1 ysj2 = new zilei1();
            ysj2.xiaodu(70);
            
        //向上转型调用方法    
            fulei ysj3 = new zilei1();
            ysj3.xiaodu(80);
    }

}