/******
檔名：JPA06_1.java
題目：TQC+ JAVA6物件導向程式設計 參考答案
時間：2015/06
作者：fang shi mai
******/
public class JPA06_1
{
public static void main(String args[])
{
Engine e1 = new Engine(1600);
System.out.println("1600 cost: " + e1.getCost());
Engine e2 = new Engine(2000);
System.out.println("2000 cost: " + e2.getCost());
Aircond a1 = new Aircond("Auto");
System.out.println("Auto: " + a1.getCost());
Aircond a2 = new Aircond("Manual");
System.out.println("Manual: " + a2.getCost());
Sound s1 = new Sound();
System.out.println("Stereo: " + s1.getCost());
}
}
abstract class unit
{
int cost;
int getCost()
{
return cost;
}
}
class Engine extends unit
{
Engine(int a)
{
if(a==1600)
cost=20000;
else if(a==2000)
cost=25000;
}
}
class Aircond extends unit
{
Aircond(String a)
{
if(a.equals("Auto"))
cost=12000;
else if(a.equals("Manual"))
cost=10000;
}
}
class Sound extends unit
{
Sound()
{
cost=2000;
}
}
/******
檔名：JPA06_2.java
題目：TQC+ JAVA6物件導向程式設計 參考答案
時間：2015/06
作者：fang shi mai
******/
public class JPA06_2
{
public static void main(String args[])
{
BasicCar bc = new BasicCar(1600,"Manual");
System.out.println("Basic cost: " + bc.cost());
System.out.println("Basic price: " + bc.price());
LuxCar lc = new LuxCar(2000,"Auto");
System.out.println("Lux cost: " + lc.cost());
System.out.println("Lux price: " + lc.price());
}
}
abstract class Car
{
Engine en;
Aircond ai;
double price()
{
return this.cost()*1.2;
}
abstract double cost();
}
class BasicCar extends Car
{
BasicCar(int a,String b)
{
en=new Engine(a);
ai=new Aircond(b);
}
double cost()
{
return en.getCost()+ai.getCost()+5000;
}
}
class LuxCar extends Car
{
LuxCar(int a,String b)
{
en=new Engine(a);
ai=new Aircond(b);
}
double cost()
{
return en.getCost()+ai.getCost()+10000;
}
}
abstract class unit
{
int cost;
int getCost()
{
return cost;
}
}
class Engine extends unit
{
Engine(int a)
{
if(a==1600)
cost=20000;
else if(a==2000)
cost=25000;
}
}
class Aircond extends unit
{
Aircond(String a)
{
if(a.equals("Auto"))
cost=12000;
else if(a.equals("Manual"))
cost=10000;
}
}
class Sound extends unit
{
Sound()
{
cost=2000;
}
}
/******
檔名：JPA06_3.java
題目：TQC+ JAVA6物件導向程式設計 參考答案
時間：2015/06
作者：fang shi mai
******/
public class JPA06_3
{
public static void main(String args[])
{
SLuxCar llc = new SLuxCar(2000,"Auto");
System.out.println("SLux cost: " + llc.cost());
System.out.println("SLux price: " + llc.price());
LuxCar lc = new LuxCar(2000,"Auto");
System.out.println("Is llc more expensive than lc? " + llc.expensive(lc));
}
}
class SLuxCar extends LuxCar
{
Sound so;
SLuxCar(int a,String b)
{
super(a,b);
so=new Sound();
}
double cost()
{
return super.cost()+so.getCost();
}
}
abstract class Car
{
Engine en;
Aircond ai;
double price()
{
return this.cost()*1.2;
}
String expensive(Car a)
{
double x=this.cost();
double y=a.cost();
if(x>y)
return "Yes!!";
else
return "No!!";
}
abstract double cost();
}
class BasicCar extends Car
{
BasicCar(int a,String b)
{
en=new Engine(a);
ai=new Aircond(b);
}
double cost()
{
return en.getCost()+ai.getCost()+5000;
}
}
class LuxCar extends Car
{
LuxCar(int a,String b)
{
en=new Engine(a);
ai=new Aircond(b);
}
double cost()
{
return en.getCost()+ai.getCost()+10000;
}
}
abstract class unit
{
int cost;
int getCost()
{
return cost;
}
}
class Engine extends unit
{
Engine(int a)
{
if(a==1600)
cost=20000;
else if(a==2000)
cost=25000;
}
}
class Aircond extends unit
{
Aircond(String a)
{
if(a.equals("Auto"))
cost=12000;
else if(a.equals("Manual"))
cost=10000;
}
}
class Sound extends unit
{
Sound()
{
cost=2000;
}
}
/******
檔名：JPA06_4.java
題目：TQC+ JAVA6物件導向程式設計 參考答案
時間：2015/06
作者：fang shi mai
******/
import java.util.Scanner;
import java.util.ArrayList;
import java.io.FileNotFoundException;
import java.io.File;
public class JPA06_4
{
public static void main(String args[])
{
Scanner sc = null;
try
{
sc = new Scanner(new File("data.txt"));
}
catch(FileNotFoundException e)
{
System.out.println ("File not found!");
System.exit (0);
}
Wharehouse wh = new Wharehouse();
while(sc.hasNext())
{
String a=sc.next();
int b=sc.nextInt();
String c=sc.next();
if(a.equals("B"))
wh.add(new BasicCar(b,c));
else if(a.equals("L"))
wh.add(new LuxCar(b,c));
else if(a.equals("S"))
wh.add(new SLuxCar(b,c));
}
System.out.println("Total cost: " + wh.TotalCost());
System.out.println("Total price: " + wh.TotalPirce());
}
}
class Wharehouse
{
ArrayList<Car> al=new ArrayList<Car>();
void add(Car a)
{
al.add(a);
}
double TotalCost()
{
double sum=0;
for(Car i:al)
{
sum+=i.cost();
}
return sum;
}
double TotalPirce()
{
double sum=0;
for(Car i:al)
{
sum+=i.price();
}
return sum;
}
}
class SLuxCar extends LuxCar
{
Sound so;
SLuxCar(int a,String b)
{
super(a,b);
so=new Sound();
}
double cost()
{
return super.cost()+so.getCost();
}
}
abstract class Car
{
Engine en;
Aircond ai;
double price()
{
return this.cost()*1.2;
}
String expensive(Car a)
{
double x=this.cost();
double y=a.cost();
if(x>y)
return "Yes!!";
else
return "No!!";
}
abstract double cost();
}
class BasicCar extends Car
{
BasicCar(int a,String b)
{
en=new Engine(a);
ai=new Aircond(b);
}
double cost()
{
return en.getCost()+ai.getCost()+5000;
}
}
class LuxCar extends Car
{
LuxCar(int a,String b)
{
en=new Engine(a);
ai=new Aircond(b);
}
double cost()
{
return en.getCost()+ai.getCost()+10000;
}
}
abstract class unit
{
int cost;
int getCost()
{
return cost;
}
}
class Engine extends unit
{
Engine(int a)
{
if(a==1600)
cost=20000;
else if(a==2000)
cost=25000;
}
}
class Aircond extends unit
{
Aircond(String a)
{
if(a.equals("auto"))
cost=12000;
else if(a.equals("manual"))
cost=10000;
}
}
class Sound extends unit
{
Sound()
{
cost=2000;
}
}
/******
檔名：JPA06_5.java
題目：TQC+ JAVA6物件導向程式設計 參考答案
時間：2015/06
作者：fang shi mai
******/
import java.util.Scanner;
import java.util.ArrayList;
import java.io.FileNotFoundException;
import java.io.File;
public class JPA06_5
{
public static void main(String args[])
{
Scanner sc = null;
try
{
sc = new Scanner(new File("wrongdata.txt"));
}
catch (FileNotFoundException e)
{
System.out.println ("File not found!");
// Stop program if no file found
System.exit (0);
}
Wharehouse wh = new Wharehouse();
try
{
while(sc.hasNext())
{
String a=sc.next();
int b=sc.nextInt();
String c=sc.next();
if(a.equals("B"))
wh.add(new BasicCar(b,c));
else if(a.equals("L"))
wh.add(new LuxCar(b,c));
else if(a.equals("S"))
wh.add(new SLuxCar(b,c));
else
throw new NewException("Incorrect input data: "+a+" "+b+" "+c);
}
}
catch(NewException n)
{
System.out.println(n);
}
System.out.println("Total cost: " + wh.TotalCost());
System.out.println("Total price: " + wh.TotalPirce());
}
}
class NewException extends Exception
{
String exc;
NewException(String a)
{
exc=a;
}
public String toString()
{
return exc;
}
}
class Wharehouse
{
ArrayList<Car> al=new ArrayList<Car>();
void add(Car a)
{
al.add(a);
}
double TotalCost()
{
double sum=0;
for(Car i:al)
{
sum+=i.cost();
}
return sum;
}
double TotalPirce()
{
double sum=0;
for(Car i:al)
{
sum+=i.price();
}
return sum;
}
}
class SLuxCar extends LuxCar
{
Sound so;
SLuxCar(int a,String b)
{
super(a,b);
so=new Sound();
}
double cost()
{
return super.cost()+so.getCost();
}
}
abstract class Car
{
Engine en;
Aircond ai;
double price()
{
return this.cost()*1.2;
}
String expensive(Car a)
{
double x=this.cost();
double y=a.cost();
if(x>y)
return "Yes!!";
else
return "No!!";
}
abstract double cost();
}
class BasicCar extends Car
{
BasicCar(int a,String b)
{
en=new Engine(a);
ai=new Aircond(b);
}
double cost()
{
return en.getCost()+ai.getCost()+5000;
}
}
class LuxCar extends Car
{
LuxCar(int a,String b)
{
en=new Engine(a);
ai=new Aircond(b);
}
double cost()
{
return en.getCost()+ai.getCost()+10000;
}
}
abstract class unit
{
int cost;
int getCost()
{
return cost;
}
}
class Engine extends unit
{
Engine(int a)
{
if(a==1600)
cost=20000;
else if(a==2000)
cost=25000;
}
}
class Aircond extends unit
{
Aircond(String a)
{
if(a.equals("auto"))
cost=12000;
else if(a.equals("manual"))
cost=10000;
}
}
class Sound extends unit
{
Sound()
{
cost=2000;
}
}
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