//Inheritance.java
class Telephone {
    String brand,number;
    double dialledTime;
    double rate;
    
    Telephone(String b, String n) {  //构造方法
        brand = b;
        number = n;    
    }    
    
    String getBrand() { return brand; }
    String getNumber() { return number; }
    double getDialledTime() { return dialledTime; }
    double getRate() { return rate; }
    
    void setBrand(String b) { brand = b; }
    void setNumber(String n) { number = n; }
    void setDialledTime(double d) { dialledTime = d; }
    void setRate(double r) { rate = r; }
    
    double callCost() {
        return rate*dialledTime;    
    }
    
    void display() {
        System.out.println("电话品牌："+brand+"  电话号码："+number);
        System.out.println("通话时间："+dialledTime+"  费率："+rate);
        System.out.println("话费："+callCost());    
    }
}

class Mobilephone extends Telephone {
    String network;
    double receivedTime;
    
    Mobilephone(String b, String num, String net) {
        super(b,num); //显式的调用超类的有参构造函数
        network = net;
    }    
    
    String getNetwork() { return network; }
    double getReceivedTime() { return receivedTime; }
    
    void setNetwork(String n) {
        network = n;    
    }
    
    void setReceivedTime(double d) {
        receivedTime = d;        
    }
    
    double callCost() { 
        return (dialledTime+0.5*receivedTime)*rate;
    }
    //方法重写
    void display() {
        System.out.println("电话品牌："+getBrand()+"  电话号码："+getNumber()+"  网络："+getNetwork());
        System.out.println("主叫时间："+getDialledTime()+"  被叫时间："+getReceivedTime()+"  费率："+getRate());
        System.out.println("话费："+callCost());    
    }
}

public class Inheritance {
    public static void main(String args[]) {
        Telephone    tel = new Telephone("TCL","123456789");
        Mobilephone mobile = new Mobilephone("Nokia","15019905753","CDMA");
        
        tel.setRate(0.2);
        tel.setDialledTime(150);
        
        mobile.setRate(0.39);
        mobile.setDialledTime(80);
        mobile.setReceivedTime(120);
        
        tel.display();
        System.out.println();
        mobile.display();        
    }
}