Starting with nakama in android studio

I am a beginner to use nakama.
I have many problems or error when using nakama client of java in android studio (gradle).
first problem (1) => when I go to github nakama-java page and use =

implementation ‘com.github.heroiclabs:nakama-java:’

then I got error in android studio =>

Failed to resolve: com.github.heroiclabs:nakama-java:
Show in Project Structure dialog
Affected Modules: app

also for =>
implementation 'com.github.heroiclabs:nakama-java::all

(2) when I download .jar.all file and include in android studio then I get I get error defaltClient is a private acces in nakama class.

Why I am getting error Failed to resolve: com.github.heroiclabs:nakama-java:?
How I include jar file in android studio ?

PLEASE HELP ME
guide me to include nakama java client in android studio.

@surajchopra I already replied to you on the other forum thread: Android studio

Please do not open new forum threads repeatedly or you will be banned by the system.