提供一個創(chuàng)建一系列相關(guān)或者相互依賴對象的接口织咧，而無須指定他們具體的類
這里寫圖片描述
優(yōu)點(diǎn)：
良好的封裝性：每個產(chǎn)品類與高層之間的關(guān)系不需要被client知道漠秋，client只需要知道工廠類能夠創(chuàng)建出一個需要的對象即可
產(chǎn)品族內(nèi)的約束關(guān)系為非公開的狀態(tài)
缺點(diǎn)：
產(chǎn)品族擴(kuò)展較難，產(chǎn)品等級擴(kuò)展容易
代碼
Main
public class Main {
public static void main(String[] args) {
DoorFactory ldf=new LeftDoorFactory();
DoorFactory rdf=new RightDoorFactory();
CarDoor audiLeftDoor=ldf.getAUDIDoor();
audiLeftDoor.getColor();
audiLeftDoor.getDir();
CarDoor bmwRightDoor=rdf.getBMWDoor();
bmwRightDoor.getColor();
bmwRightDoor.getDir();
DoorFactory bdf=new BackDoorFactory();
CarDoor bmwBackDoor=bdf.getBMWDoor();
bmwBackDoor.getColor();
bmwBackDoor.getDir();
}
}
interface:CarDoor
public interface CarDoor {
public void getColor();
public void getDir();
}
interface:DoorFactory
public interface DoorFactory {
public CarDoor getBMWDoor();
public CarDoor getAUDIDoor();
public CarDoor getTOYOTADoor();
}
imp:BackDoorFactory
public class BackDoorFactory implements DoorFactory {
@Override
public CarDoor getBMWDoor() {
return new BMWBackDoor();
}
@Override
public CarDoor getAUDIDoor() {
// TODO Auto-generated method stub
return null;
}
@Override
public CarDoor getTOYOTADoor() {
// TODO Auto-generated method stub
return null;
}
}
imp:LeftDoorFactory
public class LeftDoorFactory implements DoorFactory {
@Override
public CarDoor getBMWDoor() {
return new BMWLeftDoor();
}
@Override
public CarDoor getAUDIDoor() {
return new AUDILeftDoor();
}
@Override
public CarDoor getTOYOTADoor() {
return new TOYOTALeftDoor();
}
}
imp:RightDoorFactory
public class RightDoorFactory implements DoorFactory {
@Override
public CarDoor getBMWDoor() {
return new BMWRightDoor();
}
@Override
public CarDoor getAUDIDoor() {
return new AUDIRightDoor();
}
@Override
public CarDoor getTOYOTADoor() {
return new TOYOTARightDoor();
}
}
imp:AUDIDoor
public class AUDIDoor implements CarDoor {
@Override
public void getColor() {
System.out.println("奧迪一直都是黑色的");
}
@Override
public void getDir() {
// TODO Auto-generated method stub
}
}
imp:BMWDoor
public class BMWDoor implements CarDoor {
@Override
public void getColor() {
System.out.println("寶馬的門向來都是紅色的");
}
@Override
public void getDir() {
// TODO Auto-generated method stub
}
}
imp:TOYOTADoor
public class TOYOTADoor implements CarDoor {
@Override
public void getColor() {
System.out.println("豐田一直都是白色的");
}
@Override
public void getDir() {
// TODO Auto-generated method stub
}
}
AUDILeftDoor
public class AUDILeftDoor extends AUDIDoor {
@Override
public void getDir() {
System.out.println("這是左門");
}
}
AUDIRightDoor
public class AUDIRightDoor extends AUDIDoor {
@Override
public void getDir() {
System.out.println("這是右門");
}
}
BMWLeftDoor
public class BMWLeftDoor extends BMWDoor {
@Override
public void getDir() {
System.out.println("這是作門");
}
}
BMWRightDoor
public class BMWRightDoor extends BMWDoor {
@Override
public void getDir() {
System.out.println("這是右門");
}
}
BMWBackDoor
public class BMWBackDoor extends BMWDoor {
@Override
public void getDir() {
System.out.println("這是寶馬的尾門");
}
}
TOYOTALeftDoor
public class TOYOTALeftDoor extends TOYOTADoor {
@Override
public void getDir() {
System.out.println("這是左門");
}
}
TOYOTARightDoor
public class TOYOTARightDoor extends TOYOTADoor {
@Override
public void getDir() {
System.out.println("這是右門");
}
}
