Car rental System

Parent class

Public abstract class Superclass {
Public double money;//Unit price
Private double moneys;//Total Price
private int sky;//Days
Public String info;//models and license plates
Private String discount;//Discount

/*
* Get and set days
*/
public int Getsky () {
return sky;
}

public void Setsky (double sky) {
if (Sky > 0) {
This.sky = (int) sky;
if (Sky!=this.sky) {
this.sky++;
}

} else {
SYSTEM.OUT.PRINTLN ("input error");
}

}

/*
* Get and Set unit price
*/
Public double Getmoney () {
return money;
}

public void Setmoney (double money) {
This.money = money;
}

/*
* Get and set Total price
*/
Public double Getmoneys () {
return moneys;
}

public void Setmoneys (double moneys) {
This.moneys = Moneys;
}

/*
* Get and set discounts
*/
Public String Getdiscount () {
return discount;
}

public void SetDiscount (String discount) {
This.discount = discount;
}

/*
* Select model
*/
Public String getInfo (int i) {
return null;
}
/*
* Daily rental price
*/
public double Getmoney (int i) {
return i;

}
/*
* Total car price (sky) means the number of days
*/
public abstract void Summoneys ();
/*
* Show the number of days to borrow and how many folds to play
*/
public abstract void Showdiscount ();
/*
* Display rental and vehicle models to customers
*/
public abstract void Showcar ();
/*
* Output Information
*/
public abstract void Showinfo ();
}

Car Inheritance Parent class

public class Cardemo extends superclass{

/*
* Select model
*/
Public String getInfo (int i) {//Information
String[] Limousine = {"BMW X6", "BMW 550i", "Buick Boulevard", "Buick GL8"};//models
String[] Tag = {"Jing NY28588", "Jing CNY3284", "Jing NT37465", "Jing NT96968"};//license
return info = "The model you selected is:" + limousine[i] + "license plate number is:" + tag[i];
}

/*
* Daily rental price
*/
public double Getmoney (int i) {
Double[] Money = {800, 600, 300, 600};
return This.money = Money[i];
}

/*
* Total car price (sky) means the number of days
*/
public void Summoneys () {
if (Getsky () > 0 && Getsky () < 7) {
This.setmoneys (This.getmoney () * Getsky ());
} else if (Getsky () >= 7 && Getsky () < 30) {
This.setmoneys ((This.getmoney () * 0.9) * Getsky ());
} else if (Getsky () >= && Getsky () < 150) {
This.setmoneys ((This.getmoney () * 0.8) * Getsky ());
} else if (Getsky () >= 150) {
This.setmoneys ((This.getmoney () * 0.7) * Getsky ());
}
}

/*
* Show the number of days to borrow and how many folds to play
*/
public void Showdiscount () {
Summoneys ();
if (Getsky () > 0 && Getsky () < 7) {
SetDiscount (Getsky () + "Day less than 7 days according to the original price processing");
} else if (Getsky () >= 7 && Getsky () < 30) {
SetDiscount (Getsky () + "days greater than or equal to seven days less than 30 days playing 90 percent");
} else if (Getsky () >= && Getsky () < 150) {
SetDiscount (Getsky () + "days greater than or equal to 30 days less than 150 days playing 80 percent");
} else if (Getsky () >= 150) {
SetDiscount (Getsky () + "days greater than or equal to 150 days dozen 70 percent");
}

}
public void Showcar () {
System.out.println (info+ "\ t a day's price is:" +getmoney ());

}

/*
* Output Information
*/
public void Showinfo () {
SYSTEM.OUT.PRINTLN (info + "T-day Price:" + Getmoney () + "yuan \ T" + this.getdiscount ()
+ "\ t payable:" + This.getmoneys ());
}
}

Instantiation of the Automobile class

public class Output {
public void NewObject () {
Scanner input = new Scanner (system.in);
Superclass car = new Cardemo ();
SYSTEM.OUT.PRINTLN ("Choose Sedan Success");
System.out.println ("1. BMW X6\t2 BMW 550i\t3. Buick Boulevard \t4. Buick GL8");
try {
int select = Input.nextint ()-1;
Car.getinfo (select);
Car.getmoney (select);
Car.showcar ();
System.out.println ("Please enter the number of days:");
Double sc = input.nextdouble ();
if (sc > 0) {
Car.setsky (SC);
Car.getsky ();
Car.showdiscount ();
Car.showinfo ();
} else {
SYSTEM.OUT.PRINTLN ("input error");
}
} catch (Exception e) {

E.printstacktrace ();
SYSTEM.ERR.PRINTLN ("Please re-enter");
New Output (). NewObject ();
}

}

}

Bus class inherit automobile class

public class CarDemo1 extends cardemo{

Public String getInfo (int i) {//Information
String[] Limousine = {"Golden cup 16 seats", "Jinbei 34", "Golden Dragon 16", "Jinlong 34"};//models
String[] Tag = {"Jing 6566754", "Jing 8696998", "Jing 8696997", "Jing 9696996"};//license
return info = "The model you selected is:" + limousine[i] + "license plate number is:" + tag[i];
}
public double Getmoney (int i) {//Unit price
Double[] Money = {800, 1500, 800,1500};
return super.money=money[i];
}
public void Summoneys () {
if (Getsky () > 0 && Getsky () < 3) {
This.setmoneys (This.getmoney () * Getsky ());
} else if (Getsky () >= 3 && Getsky () < 7) {
This.setmoneys ((This.getmoney () * 0.9) * Getsky ());
} else if (Getsky () >=7 && Getsky () < 30) {
This.setmoneys ((This.getmoney () * 0.8) * Getsky ());
} else if (Getsky () >= 30&&getsky () < 150) {
This.setmoneys ((This.getmoney () * 0.7) * Getsky ());
}else if (Getsky () >=150) {
This.setmoneys ((This.getmoney () * 0.6) * Getsky ());
}
}
public void Showdiscount () {
Summoneys ();
if (Getsky () > 0 && Getsky () < 3) {
SetDiscount (Getsky () + "Day less than 3 days according to the original price processing");
} else if (Getsky () >= 3 && Getsky () < 7) {
SetDiscount (Getsky () + "days greater than or equal to 3 days less than 7 days playing 90 percent");
} else if (Getsky () >=7 && Getsky () < 30) {
SetDiscount (Getsky () + "days greater than or equal to 7 days less than 30 days playing 80 percent");
} else if (Getsky () >= 30&&getsky () < 150) {
SetDiscount (Getsky () + "days greater than or equal to 30 days less than 150 days playing 70 percent");
}else if (Getsky () >=150) {
SetDiscount (Getsky () + "days greater than or equal to 150 days dozen 60 percent");
}
}
}

Example of Bus class

public class Test_coach {
public void Show_coach () {
Scanner input = new Scanner (system.in);
CarDemo1 car1 = new CarDemo1 ();
SYSTEM.OUT.PRINTLN ("Choose bus Success");
System.out.println ("1. Gold Cup 16 seats \t2. Jinbei 34 seats \t3. jinlong 16 seats \t4. Jinlong 34");
try {
int select = Input.nextint ()-1;
Car1.getinfo (select);
Car1.getmoney (select);
Car1.showcar ();
System.out.println ("Please enter the number of days:");
Double sc = input.nextdouble ();
if (sc > 0) {
Car1.setsky (SC);
Car1.showdiscount ();
Car1.showinfo ();
}else{
SYSTEM.OUT.PRINTLN ("input error");
}
} catch (Exception e) {
E.printstacktrace ();
SYSTEM.ERR.PRINTLN ("Please re-enter");
New Test_coach (). Show_coach ();
}


}
}

Test class

public class Test_car {
public static void Main (string[] args) {
Scanner input=new Scanner (system.in);
System.out.println ("Welcome to the car rental system!") ");
System.out.println ("1. Sedan \t2. Passenger Car");

Boolean panduan=true;
while (Panduan==true) {
String Judge=input.next ();
Switch (judge) {
Car
Case "1":
Panduan=false;
New Output (). NewObject ();
Break

Case "2":
Bus
Panduan=false;
New Test_coach (). Show_coach ();
Break
Default
SYSTEM.OUT.PRINTLN ("Input error, please re-enter");
}
}

System.out.println ("Thanks for use");
}
}

Car rental System