java开发建造者模式验证实例详解

public class Computer {
    private String hardDisk ;
    private String CPU;
    private String mainboard ;

    public void setHardDisk(String hardDisk) {
        this.hardDisk = hardDisk;
    }
    public void setCPU(String CPU) {
        this.CPU = CPU;
    }
    public void setMainboard(String mainboard) {
        this.mainboard = mainboard;
    }

    public void start()
    {
        System.out.println(hardDisk+"  "+CPU+"   "+ mainboard +"    办公");
    }

    public void work()
    {
        System.out.println(hardDisk+"  "+CPU+"   "+ mainboard +"    办公");
    }

    public void play()
    {
        System.out.println(hardDisk+"  "+CPU+"   "+ mainboard +"    娱乐");
    }
}

public abstract class ComputerBulider {
    protected Computer acomputer = new Computer();

    public abstract void buildCPU();

    public abstract void buildHardDisk();

    public abstract void buildMainboard();

    //关键代码需要返回一个产品的对象
    public Computer getComputer(){
        return acomputer;
    }
}

public class DellBulider extends ComputerBulider {
    @Override
    public void buildCPU() {
        acomputer.setCPU("dell CPU");
    }

    @Override
    public void buildHardDisk() {
        acomputer.setHardDisk("dell 硬盘");
    }

    @Override
    public void buildMainboard() {
        acomputer.setMainboard("dell 主板");
    }
}

public class LenovoBulider extends ComputerBulider {
    @Override
    public void buildCPU() {
        acomputer.setCPU("联想 CPU");
    }

    @Override
    public void buildHardDisk() {
        acomputer.setHardDisk("联想 硬盘");
    }

    @Override
    public void buildMainboard() {
        acomputer.setMainboard("联想 主板");
    }
}

//指挥者，接收指令安排建造者根据一定的工序去制作产品
public class Director {
    private ComputerBulider computerBuilder;
    public Director(ComputerBulider comBuilder) {
        this.computerBuilder = comBuilder;
    }
    public Computer construct(){
        //安装主板
        computerBuilder.buildMainboard();
        //安装cpu
        computerBuilder.buildCPU();
        //安装硬盘
        computerBuilder.buildHardDisk();

        //准备完毕，返回一个完整的计算机给调用者
        return computerBuilder.getComputer();
    }
}