Introduction - If you have any usage issues, please Google them yourself
Write a class that describes the table, including the following properties: length, width, height, color. And so the class has a function: to customize the table (the table is created when an object), you can specify both the length and breadth of the table to order. You can also specify the length, width, height, color order, the table can also specify a separate color order. And write a test class to test these types of custom methods.