如何使用传统建造者模式

这篇文章主要介绍"如何使用传统建造者模式"，在日常操作中，相信很多人在如何使用传统建造者模式问题上存在疑惑，小编查阅了各式资料，整理出简单好用的操作方法，希望对大家解答"如何使用传统建造者模式"的疑惑有所帮助！接下来，请跟着小编一起来学习吧！

传统建造者模式

• 传统建造者模式 由四种角色组成 1.产品类 2.建造者抽象类 3.建造者类 4.Director指挥者角色.

• Builder知道怎么建造一个对象, Director可以自由发挥,指挥builder完成不同部件的建造.

• 链式建造者模式,是传统建造者模式的简化.

public class Computer {    private String cpu;    private String ram;    public String getCpu() {        return cpu;    }    public void setCpu(String cpu) {        this.cpu = cpu;    }    public String getRam() {        return ram;    }    public void setRam(String ram) {        this.ram = ram;    }    @Override    public String toString() {        return "Computer{" +                "cpu='" + cpu + '\'' +                ", ram='" + ram + '\'' +                '}';    }}

public interface Builder {    void buildCpu();    void buildRam();    Computer getComputer();}

public class LenovoBuilder implements Builder {    private Computer computer;    public LenovoBuilder() {        computer = new Computer();    }    @Override    public void buildCpu() {        computer.setCpu("联想cpu");    }    @Override    public void buildRam() {        computer.setRam("联想ram");    }    @Override    public Computer getComputer() {        return computer;    }}

public class AppleBuilder implements Builder{    private Computer computer;    public AppleBuilder() {        computer = new Computer();    }    @Override    public void buildCpu() {        computer.setCpu("苹果cpu");    }    @Override    public void buildRam() {        computer.setRam("苹果ram");    }    @Override    public Computer getComputer() {        return computer;    }}

public class Director {    public Computer buildAComputer(Builder builder){       builder.buildRam();       builder.buildCpu();       return builder.getComputer();    }}

 public static void main(String[] args) {        Director director = new Director();        LenovoBuilder lenovoBuilder = new LenovoBuilder();        AppleBuilder appleBuilder = new AppleBuilder();        Computer lenovoComputer = director.buildAComputer(lenovoBuilder);        Computer appleComputer = director.buildAComputer(appleBuilder);        System.out.println(lenovoComputer);        System.out.println(appleComputer);    }

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