You will need:

1.Eclipse and java 11 to run the backend as java application.

2.Test CRUD operations using Postman url: http://localhost:8080.

3.Country Json for creation url POST http://localhost:8080/coutries:

{ "countryName":"France", "countryCode":"FR", "deathRate":"0.245" }

4.Vehicle Json for creation url POST http://localhost:8080/vehicles:

{ "doorNumber":"2", "vehicleName":"Renault clio", "maxPower":"100", "minPower":"26" }