设计模式实验五

8u软件设计                  石家庄铁道大学信息学院

 

实验5：建造者模式

本次实验属于模仿型实验，通过本次实验学生将掌握以下内容：

1、理解建造者模式的动机，掌握该模式的结构；

2、能够利用建造者模式解决实际问题。

 

[实验任务一]：计算机组装

使用建造者模式，完成下述任务：计算机组装工厂可以将CPU、内存、硬盘、主机等硬件设备组装在一起构成计算机，计算机的类型可以是笔记本，也可以是台式机。

实验要求：

1. 画出对应的类图；

 

 

2. 提交源代码；

package qb;

public class Computer {
   private String cpu;
   private String memory;
   private String hardDisk;
   private String motherboard;
   private String type;

   public void setCpu(String cpu) {
       this.cpu = cpu;
   }

   public void setMemory(String memory) {
       this.memory = memory;
   }

   public void setHardDisk(String hardDisk) {
       this.hardDisk = hardDisk;
   }
   public void setMotherboard(String motherboard) {
       this.motherboard = motherboard;
   }

   public void setType(String type) {
       this.type = type;
   }

   @Override
   public String toString() {
       return "Computer{" +
               "cpu='" + cpu + '\'' +
               ", memory='" + memory + '\'' +
               ", hardDisk='" + hardDisk + '\'' +
               ", motherboard='" + motherboard + '\'' +
               ", type='" + type + '\'' +
               '}';
   }
}

 

package qb;

public class ComputerAssemblyFactory {
   public static Computer assembleComputer(ComputerBuilder computerBuilder) {
       computerBuilder.buildCPU();
       computerBuilder.buildMemory();
       computerBuilder.buildHardDisk();
       computerBuilder.buildMotherboard();
       return computerBuilder.getComputer();
   }
}

 

package qb;

public interface ComputerBuilder {
   void buildCPU();
   void buildMemory();
   void buildHardDisk();
   void buildMotherboard();
   Computer getComputer();
}

 

package qb;

public class DesktopBuilder implements ComputerBuilder {
   private Computer computer;

   public DesktopBuilder() {
       computer = new Computer();
       computer.setType("Desktop");
   }

   @Override
   public void buildCPU() {
       computer.setCpu("Desktop CPU");
   }

   @Override
   public void buildMemory() {
       computer.setMemory("Desktop Memory");
   }

   @Override
   public void buildHardDisk() {
       computer.setHardDisk("Desktop Hard Disk");
   }

   @Override
   public void buildMotherboard() {
       computer.setMotherboard("Desktop Motherboard");
   }

   @Override
   public Computer getComputer() {
       return computer;
   }
}

 

package qb;

public class LaptopBuilder implements ComputerBuilder {
   private Computer computer;

   public LaptopBuilder() {
       computer = new Computer();
       computer.setType("Laptop");
   }

   @Override
   public void buildCPU() {
       computer.setCpu("Laptop CPU");
   }

   @Override
   public void buildMemory() {
       computer.setMemory("Laptop Memory");
   }

   @Override
   public void buildHardDisk() {
       computer.setHardDisk("Laptop Hard Disk");
   }

   @Override
   public void buildMotherboard() {
       computer.setMotherboard("Laptop Motherboard");
   }

   @Override
   public Computer getComputer() {
       return computer;
   }
}

 

package qb;

public class Main {
   public static void main(String[] args) {
       ComputerBuilder laptopBuilder = new LaptopBuilder();
       Computer laptop = ComputerAssemblyFactory.assembleComputer(laptopBuilder);
       System.out.println(laptop);

       ComputerBuilder desktopBuilder = new DesktopBuilder();
       Computer desktop = ComputerAssemblyFactory.assembleComputer(desktopBuilder);
       System.out.println(desktop);
   }
}

 

 

运行截图

 

 

3.注意编程规范。