构建器模式是创建不可变对象的流行方法，但是创建构建器有一些编程开销。所以我想知道为什么不简单地使用config对象。

生成器的用法如下所示：

Product p = Product.Builder.name("Vodka").alcohol(0.38).size(0.7).price(17.99).build();

显然，这是非常易读和简洁的，但是您必须实现构建器：

public class Product {

    public final String name;
    public final float alcohol;
    public final float size;
    public final float price;

    private Product(Builder builder) {
        this.name = builder.name;
        this.alcohol = builder.alcohol;
        this.size = builder.size;
        this.price = builder.price;
    }

    public static class Builder {

        private String name;
        private float alcohol;
        private float size;
        private float price;

        // mandatory
        public static Builder name(String name) {
            Builder b = new Builder();
            b.name = name;
            return b;
        }

        public Builder alcohol(float alcohol) {
            this.alcohol = alcohol;
            return.this;
        }

        public Builder size(float size) {
            this.size = size;
            return.this;
        }

        public Builder price(float price) {
            this.price = price;
            return.this;
        }

        public Product build() {
            return new Product(this);
        }

    }

}

我的想法是，通过使用像这样的简单配置对象来减少代码：

class ProductConfig {

        public String name;
        public float alcohol;
        public float size;
        public float price;

        // name is still mandatory
        public ProductConfig(String name) {
            this.name = name;
        }

}

public class Product {

    public final String name;
    public final float alcohol;
    public final float size;
    public final float price;

    public Product(ProductConfig config) {
        this.name = config.name;
        this.alcohol = config.alcohol;
        this.size = config.size;
        this.price = config.price;
    }

}

用法：

ProductConfig config = new ProductConfig("Vodka");
config.alcohol = 0.38;
config.size = 0.7;
config.price = 17.99;
Product p = new Product(config);

这种用法需要多几行，但也很容易理解，但是实现起来要简单得多，对于不熟悉构建器模式的人来说，也许更容易理解。顺便说一句：这个模式有名称吗？

我忽略的配置方法是否有缺点？