建造者模式

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 Builder;

 

public class Computer {

    private String CPU;

    private String RAM;

    private String Hard;

    private String Host;

    public String getCPU() {

        return CPU;

    }

    public void setCPU(String cPU) {

        CPU = cPU;

    }

    public String getRAM() {

        return RAM;

    }

    public void setRAM(String rAM) {

        RAM = rAM;

    }

    public String getHard() {

        return Hard;

    }

    public void setHard(String hard) {

        Hard = hard;

    }

    public String getHost() {

        return Host;

    }

    public void setHost(String host) {

        Host = host;

    }

}

package Builder;

 

public abstract class ComputerBuilder {

    protected Computer computer=new Computer();

    public abstract void buildCPU();

    public abstract void buildRAM();

    public abstract void buildHard();

    public abstract void buildHost();

    public Computer getComputer()

    {

        return computer;

    }

}

package Builder;

public class DesktopComputerBuilder extends ComputerBuilder{

    public void buildCPU() {

        computer.setCPU("安装台式机CPU");

    }

    public void buildRAM() {

        computer.setRAM("安装台式机内存");

    }

    public void buildHard() {

        computer.setHard("安装台式机硬盘");

    }

    public void buildHost() {

        computer.setHost("安装台式机主机");

    }

}

package Builder;

public class Director {

    private ComputerBuilder cb;

    public void setComputerBuilder(ComputerBuilder c)

    {

        cb=c;

    }

    public Computer construct()

    {

        cb.buildCPU();

        cb.buildRAM();

        cb.buildHard();

        cb.buildHost();

        return cb.getComputer();

    }

}

package Builder;

 

public class LaptopComputerBuilder extends ComputerBuilder{

    public void buildCPU() {

        computer.setCPU("安装笔记本CPU");

    }

    public void buildRAM() {

        computer.setRAM("安装笔记本内存");

    }

    public void buildHard() {

        computer.setHard("安装笔记本硬盘");

    }

    public void buildHost() {

        computer.setHost("安装笔记本主机");

    }

}

package Builder;

import java.util.Scanner;

 

public class main {

    public static void main(String args[])

    {

        ComputerBuilder cb = null;

        System.out.println("请选择：1、笔记本 2、台式机");

        Scanner input=new Scanner(System.in);

        int i=input.nextInt();

        if(i==1) {

            cb=new LaptopComputerBuilder();

        }else if(i==2) {

            cb=new DesktopComputerBuilder();

        }else {

            System.out.println("输入无效！");

        }

        Director dir=new Director();

        dir.setComputerBuilder(cb);

        Computer computer=dir.construct();

        System.out.println("计算机组成：");

        System.out.println(computer.getCPU());

        System.out.println(computer.getRAM());

        System.out.println(computer.getHard());

        System.out.println(computer.getHost());

    }

}

 

//run此文件

3.注意编程规范。