JAVA question

Problem 2 Consider the class diagram for a Shipping Calculator system given below ShippingCost +calculateShippingCost(double): double FlatRateShipping StandardShipping -MAX WEIGHT ALLOWED: double -FLAT RATE COST double BASE WEIGHT: double BASE CHARGE: double EXTRA POUND COST double +calculateShippingCost(double): double +calculateShippingCost(double): double Extends ExpressShipping -EXPRESS MAIL SURCHARGE: double +calculateShippingCost(double): double For this problem, you will be writing code to meet the design outlined in the above diagram and will provide a driver class as wel. A brief description of the interface and classes is given below ShippingCost: The abstract method in the interface takes one double parameter that specifies the weight of the package to be shipped. It returns the cost of shipping that package FlatRateShipping: Applies a flat rate for weight up to MAX WEIGHT ALLOWED. You can set the values for the two constants. If this option is chosen by the customer, as long as the weight of the package is less than or equal to the MAX_WEIGHT_ALLOWED, the cost of shipping would be the FLAT RATE COST StandardShipping: Applies a BASE_CHARGE per pound up to BASEWEIGHT. Each additional pound is charged at EXTRA POUND_COST. You can set the values for the two constants ExpressShipping: Applies an EXPRESS MAIL_SURCHARGE to the standard shipping cost. You can set the values for the constant. Problem 2 Consider the class diagram for a Shipping Calculator system given below ShippingCost +calculateShippingCost(double): double FlatRateShipping StandardShipping -MAX WEIGHT ALLOWED: double -FLAT RATE COST double BASE WEIGHT: double BASE CHARGE: double EXTRA POUND COST double +calculateShippingCost(double): double +calculateShippingCost(double): double Extends ExpressShipping -EXPRESS MAIL SURCHARGE: double +calculateShippingCost(double): double For this problem, you will be writing code to meet the design outlined in the above diagram and will provide a driver class as wel. A brief description of the interface and classes is given below ShippingCost: The abstract method in the interface takes one double parameter that specifies the weight of the package to be shipped. It returns the cost of shipping that package FlatRateShipping: Applies a flat rate for weight up to MAX WEIGHT ALLOWED. You can set the values for the two constants. If this option is chosen by the customer, as long as the weight of the package is less than or equal to the MAX_WEIGHT_ALLOWED, the cost of shipping would be the FLAT RATE COST StandardShipping: Applies a BASE_CHARGE per pound up to BASEWEIGHT. Each additional pound is charged at EXTRA POUND_COST. You can set the values for the two constants ExpressShipping: Applies an EXPRESS MAIL_SURCHARGE to the standard shipping cost. You can set the values for the constant