VIPJAVA/12306-demo/my-ticket-service/src/main/java/com/sf/design/builder/MyBuilder.java

package com.sf.design.builder;


public class MyBuilder implements Builder{

    private Product product = new Product();

    @Override
    public Builder buildPartA(String partA) {
        product.setPartA(partA);
        return this;
    }

    @Override
    public Builder buildPartB(String partB) {
        product.setPartB(partB);
        return this;
    }

    @Override
    public Builder buildPartC(String partC) {
        product.setPartC(partC);
        return this;
    }

    @Override
    public Product getProduct() {
        return product;
    }
}