指挥者

    1. package miluo.design.patterns.builder;
    3. /**
    4.  * @author Miluo
    5.  * @className Director
    6.  * @description 指挥者
    7.  * @date 2022/2/25
    8.  **/
    9. public class Director {
    10.     private RoomBuilder roomBuilder;
    12.     public Director(RoomBuilder roomBuilder) {
    13.         this.roomBuilder = roomBuilder;
    14.     }
    16.     public Room getRoom() {
    17.         roomBuilder.createFloor();
    18.         roomBuilder.createFurniture();
    19.         roomBuilder.createDecorate();
    20.         return roomBuilder.getRoom();
    21.     }
    22. }

    抽象建造者

    1. package miluo.design.patterns.builder;
    3. /**
    4.  * @author Miluo
    5.  * @className RoomBuilder
    6.  * @description 抽象建造类
    7.  * @date 2022/2/25
    8.  **/
    9. public abstract class RoomBuilder {
    10.     protected Room room = new Room();
    12.     /**
    13.      * 创建地板
    14.      */
    15.     public abstract void createFloor();
    17.     /**
    18.      * 创建家具
    19.      */
    20.     public abstract void createFurniture();
    22.     /**
    23.      * 创建装饰
    24.      */
    25.     public abstract void createDecorate();
    27.     /**
    28.      * 获取产品
    29.      * @return 产品
    30.      */
    31.     public Room getRoom() {
    32.         return this.room;
    33.     }
    34. }

    具体建造者

    1. package miluo.design.patterns.builder;
    3. /**
    4.  * @author Miluo
    5.  * @className LivingRoom
    6.  * @description
    7.  * @date 2022/2/25
    8.  **/
    9. public class BedRoomBuilder extends RoomBuilder {
    11.     @Override
    12.     public void createFloor() {
    13.         room.setFloor("木制地板");
    14.     }
    16.     @Override
    17.     public void createFurniture() {
    18.         room.setFurniture("单人床");
    19.     }
    21.     @Override
    22.     public void createDecorate() {
    23.         room.setDecorate("床头柜");
    24.     }
    25. }
    1. package miluo.design.patterns.builder;
    3. /**
    4.  * @author Miluo
    5.  * @className LivingRoom
    6.  * @description
    7.  * @date 2022/2/25
    8.  **/
    9. public class LivingRoomBuilder extends RoomBuilder {
    11.     @Override
    12.     public void createFloor() {
    13.         room.setFloor("瓷砖地板");
    14.     }
    16.     @Override
    17.     public void createFurniture() {
    18.         room.setFurniture("沙发");
    19.     }
    21.     @Override
    22.     public void createDecorate() {
    23.         room.setDecorate("茶几");
    24.     }
    25. }

    产品

    1. package miluo.design.patterns.builder;
    3. import lombok.Getter;
    4. import lombok.Setter;
    6. /**
    7.  * @author Miluo
    8.  * @className Room
    9.  * @description 产品类
    10.  * @date 2022/2/25
    11.  **/
    12. @Setter
    13. @Getter
    14. public class Room {
    15.     private String floor;
    16.     private String furniture;
    17.     private String decorate;
    19.     @Override
    20.     public String toString() {
    21.         return "由" + floor + "、" + furniture  + "、" + decorate + "组成";
    22.     }
    23. }

    测试

    1. package miluo.design.patterns.builder;
    3. /**
    4.  * @author Miluo
    5.  * @className testBuilder
    6.  * @description
    7.  * @date 2022/2/25
    8.  **/
    9. public class TestBuilder {
    10.     public static void main(String[] args) {
    12.         LivingRoomBuilder livingRoomBuilder = new LivingRoomBuilder();
    13.         Director livingDirector = new Director(livingRoomBuilder);
    14.         Room livingRoom = livingDirector.getRoom();
    15.         System.out.println("客厅：" + livingRoom.toString());
    17.         System.out.println("**************");
    19.         BedRoomBuilder bedRoomBuilder = new BedRoomBuilder();
    20.         Director bedDirector = new Director(bedRoomBuilder);
    21.         Room bedRoom = bedDirector.getRoom();
    22.         System.out.println("卧室：" + bedRoom.toString());
    23.     }
    24. }
    1. Connected to the target VM, address: '127.0.0.1:12822', transport: 'socket'
    2. 客厅：由瓷砖地板、沙发、茶几组成
    3. **************
    4. 卧室：由木制地板、单人床、床头柜组成
    5. Disconnected from the target VM, address: '127.0.0.1:12822', transport: 'socket'