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"Simple Factory" vs "Factory Method" vs "Abstract Factory" vs "Reflect"

2017-07-10 21:24 681 查看

ref: http://www.cnblogs.com/zhangchenliang/p/3700820.html
1. "Simple Factory"

package torv.abc;

public class HelloMain {

public static void main(String[] args) {
Driver.createCar("audi").drive();
}
}

//====================================================== product car

abstract class Car {
private String brand;

public abstract void drive();

public String getBrand() {
return brand;
}

public void setBrand(String brandName) {
brand = brandName;
}
}

//------------------------------------------------benz
class BenzCar extends Car {
public BenzCar() {
setBrand("Benz");
}

@Override
public void drive() {
System.out.println(getBrand() + "--go-----");
}
}

//------------------------------------------------bmw
class BmwCar extends Car {
public BmwCar() {
setBrand("Bmw");
}

@Override
public void drive() {
System.out.println(getBrand() + "--go-----");
}
}

//------------------------------------------------audi
class AudiCar extends Car {
public AudiCar() {
setBrand("Audi");
}

@Override
public void drive() {
System.out.println(getBrand() + "--go-----");
}
}

//====================================================== factory

class Driver {
public static Car createCar(String carName) {
Car car = null;

if (carName.equalsIgnoreCase("benz")) {
car = new BenzCar();
} else if (carName.equalsIgnoreCase("bmw")) {
car = new BmwCar();
} else if (carName.equalsIgnoreCase("audi")) {
car = new AudiCar();
}

return car;
}
}

2. "Factory Method"

package torv.abc;

public class HelloMain {

public static void main(String[] args) {
Driver driver = new BmwDriver();
driver.createCar().drive();
}
}

//====================================================== product car

abstract class Car {
private String brand;

public abstract void drive();

public String getBrand() {
return brand;
}

public void setBrand(String brandName) {
brand = brandName;
}
}

//------------------------------------------------benz
class BenzCar extends Car {
public BenzCar() {
setBrand("Benz");
}

@Override
public void drive() {
System.out.println(getBrand()+"--go-----");
}
}

//------------------------------------------------bmw
class BmwCar extends Car {
public BmwCar() {
setBrand("Bmw");
}

@Override
public void drive() {
System.out.println(getBrand()+"--go-----");
}
}

//------------------------------------------------audi
class AudiCar extends Car {
public AudiCar() {
setBrand("Audi");
}

@Override
public void drive() {
System.out.println(getBrand()+"--go-----");
}
}

//====================================================== factory

abstract class Driver {
public abstract Car createCar();
}

class BenzDriver extends Driver{

@Override
public Car createCar() {
return new BenzCar();
}

}

class BmwDriver extends Driver{

@Override
public Car createCar() {
return new BmwCar();
}

}

class AudiDriver extends Driver{

@Override
public Car createCar() {
return new AudiCar();
}

}

3. "Abstract Factory"

package torv.abc;

public class HelloMain {

public static void main(String[] args) {
Driver driver = new SportDriver();
driver.createAudiCar().drive();
}
}

//====================================================== product car

abstract class Car {
private String brand;
private String kind;

public abstract void drive();

public String getBrand() {
return brand;
}

public void setBrand(String brandName) {
brand = brandName;
}

public String getKind() {
return kind;
}

public void setKind(String kindName) {
kind = kindName;
}
}

//------------------------------------------------benz
abstract class BenzCar extends Car {
public BenzCar() {
setBrand("Benz");
}
}

class BenzSportCar extends BenzCar {

public BenzSportCar() {
setKind("Sport");
}

@Override
public void drive() {
System.out.println(getBrand() + "--" + getKind() + "--go-------");
}

}

class BenzBizCar extends BenzCar {

public BenzBizCar() {
setKind("Biz");
}

@Override
public void drive() {
System.out.println(getBrand() + "--" + getKind() + "--go-------");
}

}

//------------------------------------------------bmw
abstract class BmwCar extends Car {
public BmwCar() {
setBrand("Bmw");
}
}

class BmwSportCar extends BmwCar {

public BmwSportCar() {
setKind("Sport");
}

@Override
public void drive() {
System.out.println(getBrand() + "--" + getKind() + "--go-------");
}

}

class BmwBizCar extends BmwCar {

public BmwBizCar() {
setKind("Biz");
}

@Override
public void drive() {
System.out.println(getBrand() + "--" + getKind() + "--go-------");
}

}

//------------------------------------------------audi
abstract class AudiCar extends Car {
public AudiCar() {
setBrand("Audi");
}
}

class AudiSportCar extends AudiCar {

public AudiSportCar() {
setKind("Sport");
}

@Override
public void drive() {
System.out.println(getBrand() + "--" + getKind() + "--go-------");
}

}

class AudiBizCar extends AudiCar {

public AudiBizCar() {
setKind("Biz");
}

@Override
public void drive() {
System.out.println(getBrand() + "--" + getKind() + "--go-------");
}

}

//====================================================== factory

abstract class Driver {
public abstract Car createBenzCar();

public abstract Car createBmwCar();

public abstract Car createAudiCar();
}

class SportDriver extends Driver {

@Override
public Car createBenzCar() {
return new BenzSportCar();
}

@Override
public Car createBmwCar() {
return new BmwSportCar();
}

@Override
public Car createAudiCar() {
return new AudiSportCar();
}
}

class BizDriver extends Driver {

@Override
public Car createBenzCar() {
return new BenzBizCar();
}

@Override
public Car createBmwCar() {
return new BmwBizCar();
}

@Override
public Car createAudiCar() {
return new AudiBizCar();
}

}

3. "Simple Factory" + Reflect

package torv.abc;

public class HelloMain {

public static void main(String[] args) {
try {
Driver.createCar("torv.abc.BenzSportCar").drive();
} catch (Exception e) {
e.printStackTrace();
}
}
}

//====================================================== product car

abstract class Car {
private String brand;
private String kind;

public abstract void drive();

public String getBrand() {
return brand;
}

public void setBrand(String brandName) {
brand = brandName;
}

public String getKind() {
return kind;
}

public void setKind(String kindName) {
kind = kindName;
}
}

//------------------------------------------------benz
abstract class BenzCar extends Car {
public BenzCar() {
setBrand("Benz");
}
}

class BenzSportCar extends BenzCar {

public BenzSportCar() {
setKind("Sport");
}

@Override
public void drive() {
System.out.println(getBrand() + "--" + getKind() + "--go-------");
}

}

class BenzBizCar extends BenzCar {

public BenzBizCar() {
setKind("Biz");
}

@Override
public void drive() {
System.out.println(getBrand() + "--" + getKind() + "--go-------");
}

}

//------------------------------------------------bmw
abstract class BmwCar extends Car {
public BmwCar() {
setBrand("Bmw");
}
}

class BmwSportCar extends BmwCar {

public BmwSportCar() {
setKind("Sport");
}

@Override
public void drive() {
System.out.println(getBrand() + "--" + getKind() + "--go-------");
}

}

class BmwBizCar extends BmwCar {

public BmwBizCar() {
setKind("Biz");
}

@Override
public void drive() {
System.out.println(getBrand() + "--" + getKind() + "--go-------");
}

}

//------------------------------------------------audi
abstract class AudiCar extends Car {
public AudiCar() {
setBrand("Audi");
}
}

class AudiSportCar extends AudiCar {

public AudiSportCar() {
setKind("Sport");
}

@Override
public void drive() {
System.out.println(getBrand() + "--" + getKind() + "--go-------");
}

}

class AudiBizCar extends AudiCar {

public AudiBizCar() {
setKind("Biz");
}

@Override
public void drive() {
System.out.println(getBrand() + "--" + getKind() + "--go-------");
}

}

//====================================================== factory

abstract class Driver {
public static Car createCar(String name) throws Exception{
return (Car) Class.forName(name).newInstance();
}
}

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&quot;Simple Factory&quot; vs &quot;Factory Method&quot; vs &quot;Abstract Factory&quot; vs &quot;Reflect&quot;

"Simple Factory" vs "Factory Method" vs "Abstract Factory" vs "Reflect"