建造者模式

建造者模式

实体类

public class Product {
    private String productName;
    private String companyName;
    private String part1;
    private String part2;
    private String part3;
    private String part4;

    public Product() {
    }

    public Product(String productName, String companyName, String part1, String part2, String part3, String part4) {
        this.productName = productName;
        this.companyName = companyName;
        this.part1 = part1;
        this.part2 = part2;
        this.part3 = part3;
        this.part4 = part4;
    }

    @Override
    public String toString() {
        return "Product{" +
                "productName='" + productName + '\'' +
                ", companyName='" + companyName + '\'' +
                ", part1='" + part1 + '\'' +
                ", part2='" + part2 + '\'' +
                ", part3='" + part3 + '\'' +
                ", part4='" + part4 + '\'' +
                '}';
    }

    public String getProductName() {
        return productName;
    }

    public void setProductName(String productName) {
        this.productName = productName;
    }

    public String getCompanyName() {
        return companyName;
    }

    public void setCompanyName(String companyName) {
        this.companyName = companyName;
    }

    public String getPart1() {
        return part1;
    }

    public void setPart1(String part1) {
        this.part1 = part1;
    }

    public String getPart2() {
        return part2;
    }

    public void setPart2(String part2) {
        this.part2 = part2;
    }

    public String getPart3() {
        return part3;
    }

    public void setPart3(String part3) {
        this.part3 = part3;
    }

    public String getPart4() {
        return part4;
    }

    public void setPart4(String part4) {
        this.part4 = part4;
    }
}

建造者

public interface ProductBuilder {
    void builderProductName();

    void builderCompanyName();

    void builderPart1();

    void builderPart2();

    void builderPart3();

    void builderPart4();

    Product builder();
}

具体建造者

public class ConcreteProductBuilder implements ProductBuilder {
    private String productName;
    private String companyName;
    private String part1;
    private String part2;
    private String part3;
    private String part4;

    @Override
    public void builderProductName() {
        this.productName = "productName";
    }

    @Override
    public void builderCompanyName() {
        this.companyName = "companyName";
    }

    @Override
    public void builderPart1() {
        this.part1 = "part1";
    }

    @Override
    public void builderPart2() {
        this.part2 = "part2";
    }

    @Override
    public void builderPart3() {
        this.part3 = "part3";
    }

    @Override
    public void builderPart4() {
        this.part4 = "part4";
    }

    @Override
    public Product builder() {
        return new Product(this.productName, this.companyName, this.part1, this.part2, this.part3, this.part4);
    }
}

指挥者

public class Director {
    public Product makeProduct(ProductBuilder builder) {
        builder.builderProductName();
        builder.builderCompanyName();
        builder.builderPart1();
        builder.builderPart2();
        builder.builderPart3();
        builder.builderPart4();
        return builder.builder();
    }
}

测试类

public class BuilderTest {
    public static void main(String[] args) {
        ProductBuilder concreteProductBuilder = new ConcreteProductBuilder();
        Director director = new Director();
        Product productname = director.makeProduct(concreteProductBuilder);
        System.out.println(productname);
    }
}