1. A regular amount consists of a frequency and amount. Regular amounts are used to collect the value of regular payments or income for a citizen.
2. A frequency defines a regular interval at which a payment is made or income received. Frequency may be one of:
   • WEEK
   • TWO_WEEK
   • FOUR_WEEK
   • MONTH
   • QUARTER
   • YEAR
3. An amount contains a value of pounds and pence entered as a String with an optional decimal point. Assume that amount is being validated by a different JSR-303 annotation.

1. Create a JSR-303 annotation and associated ConstraintValidator
2. Annotation must validate a regular amount instance:
   • If frequency is a multiple of a week, monetary amount must be divisible to a weekly value that is a whole number of pence.
3. The annotation should not require knowledge of the specific value to be entered, only that it may be divided exactly to a weekly value, when entered at a multiple of one week frequency.

• Download the zip or clone the Git repository. Unzip the zip file (if you downloaded one)
• Open Command Prompt and Change directory (cd) to folder containing pom.xml and run the command to install all the dependencies

mvn clean install

To run in local

mvn clean spring-boot:run

After this you can access the application from following url: POST http://localhost:8000/api/v1/income

Request Body: { "frequency": "QUARTER", "amount": "100" }

Success Response: 200 OK "Success"

Error Response: 400 Bad Request { "errors": [ { "code": "BAD_REQUEST", "message": "Invalid Amount! Not a whole number." } ] }