Using the Java MaxMind Class with ColdFusion

Question

I am trying to use the MaxMind java library with ColdFusion.

I am starting to convert this sample code to the official MaxMind website:

// A File object pointing to your GeoIP2 or GeoLite2 database
File database = new File("/path/to/GeoIP2-City.mmdb");

// This creates the DatabaseReader object, which should be reused across
// lookups.
DatabaseReader reader = new DatabaseReader.Builder(database).build();

InetAddress ipAddress = InetAddress.getByName("128.101.101.101");

// Replace "city" with the appropriate method for your database, e.g.,
// "country".
CityResponse response = reader.city(ipAddress);

Country country = response.getCountry();

I tried:

var file = "pathto\maxmind\GeoLite2-City.mmdb";
var db = createObject("java","java.io.File").init(file);

var mm = createObject("java", "com.maxmind.geoip2.DatabaseReader")
.Builder(db)
.build();

dump(c);abort;

I got this error:

Type: java.lang.NoSuchMethodException 
Messages: No matching Method for Builder(java.io.File) found 
for com.maxmind.geoip2.DatabaseReader

What am I doing wrong?

Answer 1

( Update: @oschwald already provided the answer . However, I am leaving this as an extended comment, as it contains some useful information about accessing inner classes and constructors from CF)

DatabaseReader reader = new DatabaseReader.Builder(database).build();

. ? , Builder - . DatabaseReader, , .. createObject("java", "path.OuterClass$InnerClass").

, new DatabaseReader.Builder(database) Builder . CF "" java-. psuedo init(), :

var mm = createObject("java", "com.maxmind.geoip2.DatabaseReader$Builder").init(db).build();

NB: init() , . java- no-argument , new DatabaseReader.Builder().build(), init(). CF , , - .. build() -.

Answer 2

Builder - , . , - :

var mm = CreateObject("java", "com.maxmind.geoip2.DatabaseReader$Builder").Init(db).build();