When you’re developing applications in Salesforce, you may need to retrieve the name of a country based on its ISO code. If this is the case, let’s implement an Apex method that you can use to simplify the process.

The method is called getCountryNameByIsoCode and it takes a string argument that represents the ISO code for a particular country. For example, if you want to retrieve the name of the United States you would use the ISO code US.

The country ISO code for this method is from the standard alpha-2. Example: UY for Uruguay, AR for Argentina, etc

public static String getCountryNameByIsoCode(String isoCode){
    if(isoCode == null) return null;
    Schema.DescribeFieldResult fieldResult = User.Countrycode.getDescribe();
    List<Schema.PicklistEntry> pickListValues = fieldResult.getPicklistValues();
    
    for( Schema.PicklistEntry pickListEntry : pickListValues) {
        // pickListEntry.getLabel() returns the country name
        // pickListEntry.getValue() returns the country code
        if(pickListEntry.getValue().toLowerCase() == isoCode.toLowerCase()) {
            return pickListEntry.getLabel();
        }
    }
    return null;
}