"The getCountryCode() method must return the code for the country returned by the customer field's getCountryName() method." What? How to extract country code from countryName?

Question about the task

Resolved

I have extracted the country code from the getphonenumber() which i believe it is correct. FIrst I split with the paranthesis using .split("\\(") or .split("[(]") ; Then I take everything out after the + ;

@Override
       public String getCountryCode() {
           String[] countryCode = contact.getPhoneNumber().trim().split("\\(");
           String countryCode1 = countryCode[0].substring(1);
           return countryCode1;
       }

Adapt Customer and Contact to RowItem.
The adapter class is DataAdapter.

Initialize countries before running the program. Mapping between country codes and country names:
UA Ukraine
US United States
FR France

Requirements:

The Solution class must have a public static Map<String, String> field called countries.
Initialize the countries field in a static block in the Solution class using the test data provided in the task.
The Solution class must have a RowItem interface.
The Solution class must have a Contact interface.
The Solution class must have a Customer interface.
The DataAdapter class must implement the RowItem interface.
The DataAdapter class must contain two private fields: Customer customer and Contact contact.
The DataAdapter class must have a constructor with (Customer customer, Contact contact) parameters. It must initialize the contact and customer fields.
Implement the RowItem interface methods in the DataAdapter class using the hints in the comments in the interfaces.

package com.codegym.task.task19.task1905; import java.util.HashMap; import java.util.Map; /* Reinforce the adapter */ public class Solution { public static Map<String,String> countries = new HashMap<>(); static { countries.put("UA", "Ukraine"); countries.put("US", "United States"); countries.put("FR", "France"); } public static void main(String[] args) { } public static class DataAdapter implements RowItem { private Customer customer; private Contact contact; public DataAdapter(Customer customer, Contact contact) { this.customer = customer; this.contact = contact; } @Override public String getCompany() { return customer.getCompanyName(); } @Override public String getContactFirstName() { String[] lastAndFirstName = contact.getName().trim().split(", ", 2); String firstName = lastAndFirstName[1]; return firstName; } @Override public String getContactLastName() { String[] lastAndFirstName = contact.getName().trim().split(", ", 2); String lastName = lastAndFirstName[0]; return lastName; } @Override public String getDialString() { return null; } @Override public String getCountryCode() { String[] countryCode = contact.getPhoneNumber().trim().split("[(]"); String countryCode1 = countryCode[0].substring(1); return countryCode1; } } public static interface RowItem { String getCountryCode(); // For example: US String getCompany(); // For example: CodeGym Ltd. String getContactFirstName(); // For example: John String getContactLastName(); // For example: Peterson String getDialString(); // For example: callto://+11112223333 } public static interface Customer { String getCompanyName(); // For example: CodeGym Ltd. String getCountryName(); // For example: United States } public static interface Contact { String getName(); // For example: Peterson, John String getPhoneNumber(); // For example: +1(111)222-3333, +3(805)0123-4567, +380(50)123-4567, etc. } }