BuilderTest.java

package JavaPatternDemos;


/**
 * 创造模式
 *
 * 关注于复杂产品的创造过程，不同的Builder创造不同属性的产品
 */
public class BuilderTest {
 public static void main(String[] args) {
 HouseBuilding oneBuilder = new Builder(); // 只需要换施工队就行
 BuildManager buildMgr = new BuildManager(oneBuilder);
 House hs = buildMgr.make();
 }
}


class Roof{
 Roof(){}
 Roof(String desc_){this.desc = desc_;}

 private String desc = "roof";

 public String getDesc() {
 return desc;
 }
}

class Floor{
 Floor(){}
 Floor(String desc_){this.desc = desc_;}

 private String desc = "floor";

 public String getDesc() {
 return desc;
 }
}


class House{
 private Roof mRoof;
 private Floor mFloor;

 public void setRoof(Roof mRoof) {
 this.mRoof = mRoof;
 }

 public void setFloor(Floor mFloor) {
 this.mFloor = mFloor;
 }

 public Roof getRoof() {
 return mRoof;
 }

 public Floor getFloor() {
 return mFloor;
 }

}


interface HouseBuilding{
 void build_floor();
 void build_roof();
 public House build();
}

class Builder implements HouseBuilding{

 private House mHouse = new House();

 @Override
 public void build_floor() {
 Floor fl = new Floor();
 mHouse.setFloor(fl);
 }

 @Override
 public void build_roof() {
 Roof rf = new Roof();
 mHouse.setRoof(rf);
 }

 public House build(){
 return mHouse;
 }
}

class BuildManager {
 private HouseBuilding mBuilder;
 BuildManager(HouseBuilding builder){
 mBuilder = builder;
 // 在这里控制逻辑
 }

 public House make(){
 mBuilder.build_floor();
 mBuilder.build_roof();
 return mBuilder.build();
 }

}