I ONLY need the UML diagram for Java program, no code.

Customer Order System provides the customer with the following services described as use cases. Describe any assumptions you make.

case$1$: Log On

Precondition: The customer has created an account with the ID and password, a security question, and the customer$$s answer to the question.

Main sequence: $1.$ The customer enters the ID and password. $2.$ The system validates the customer ID and password. $3.$ If the customer ID and password are valid, the system displays the customer$$s security question. $4.$ The customer enters the answer to the question. $5.$ If the customer$$s response is the same as that stored in the system, the system displays a welcome message.

Alternative: $$ Step $3$: If the customer$$s ID does not exist in the system, the system displays no account and terminates. $$ Step $3$: If the customer$$s ID exists but password is incorrect, the system displays an error message and prompts the customer to enter ID and password. The system allows the customer to enter a maximum of three times. An then go to step $2.$ Step $5$: If the customer response is not the same, the system displays an error message and terminates.

case $2$: Log Out

Precondition: The customer has logged into the system.

Main sequence: $1.$ The customer selects $$log out.$2.$ The system makes customers log out.

Alternative: None.

case$3$: Create Account

Precondition: None

Main sequence: $1.$ The customer enters the customer ID$.2.$ The system checks if the customer ID exists. $3.$ If the customer ID is valid, the system prompts the customer to enter a password. $4.$ The system checks if the password has a minimum of six characters. The password must include at least a digit, a special character such as @$,$ #$,$ $$,\%,$ &$,$ and $*,$ and an upper case Alphabet. $5.$ If the password is valid, the system prompts the customer to enter the customer$$s name, address, and credit card number. $6.$ The customer enters the customer$$s name, address, and credit card number. $7.$ The system displays the confirmation message of account creation if the customer$$s name, address, and credit card number are not null. $8.$ The system displays a list of security questions to the customer. $9.$ The customer selects a security question and enters its answer. $10.$ The system stores the customer$$s security question and its answer.

Alternative: $$ Step $3$: If the same ID exists in the system, the system displays an error message and requests a different ID from the customer. And then go to step $2.$ Step $5$: If the password is invalid, the system prompts the customer to enter another password. And then go to step $4.$ Step $7$: If the customer$$s name, address, or credit card number is null, the system prompts the customer to enter the customer$$s name, address, or credit card number again. And then go to step $6.$

case$4$: Select Items.

Precondition: None.

Main sequence: $1.$ The customer requests the product catalog to browse. $2.$ The system displays the product names, descriptions, regular prices, and sales prices. $3.$ The customer selects one or more products and quantities from the catalog. $4.$ The system adds the selected products and quantities to a cart. $5.$ The system displays the selected products, quantities, taxes, and the total price.

Alternative: $$ Step $3$: Customer selects no product and exits.

case$5$: Make Order

Precondition: The customer has selected products to buy and logged into the system.

Main sequence: $1.$ The customer places an order for the products selected. $2.$ The system displays delivery methods: $(1)$ mail by charging a fee $($e$.$g$.,$ $$3\mathrm{.}00$ per order$)$ or $(2)$ in$-$store pick up for free. $3.$ The customer selects one of the delivery methods. $4.$ The system displays the total, including the mailing fee or free pickup. $5.$ The system retrieves the customer$$s credit card from the customer$$s account. $6.$ The system requests a bank to charge the total amount using the customer$$s credit card. $7.$ If the bank approves the charge, the system receives a four$-$digit authorization number from the bank. $8.$ The system stores the customer order, containing the order date, customer ID$,$ product name, quantity, total, and authorization number. $9.$ The system displays order confirmation to the customer.

Alternative: $$ Step $3$: The customer does not select a delivery method and exits. $$ Step $7$: If the bank denies the charge $($e$.$g$.,$ invalid credit card or over credit limit$),$ the system prompts the customer to enter another credit card number. The customer can either enter a new credit card number or exit. If the new card is valid, the bank charges it using the new credit card, and the system receives a fourdigit authorization number from the bank. The system updates its credit card number in the customer$$s account

Case $6$: View Order

Precondition: Customer has logged in

Main sequence: $1.$The customer requests all the customer$$s order information.

$2.$ The system displays each order with the customer order date, product names, quantities, and total

alt: none