GPT答：

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c void setId(Integer id) {         this.id = id;     }      public String getName() {         return name;     }      public void setName(String name) {         this.name = name;     }      public List<Product> getProducts() {         return products;     }      public void setProducts(List<Product> products) {         this.products = products;     }      public List<List<Product>> getProductsByRow() {         return productsByRow;     }      public void setProductsByRow(List<List<Product>> productsByRow) {         this.productsByRow = productsByRow;     }  }

This is the Category class in the TMall project. It has fields for the category ID, name, a list of associated Products, and a list of lists of Products (used to display them in rows on the website). The class also includes getters and setters for each field.