<dependency>
        <groupId>com.github.bad-pop</groupId>
        <artifactId>jcoinbase</artifactId>
        <version>0.2.0</version>
    </dependency>
                        
                    

                        
    compile 'com.github.bad-pop:jcoinbase:0.2.0'
                        
                    

                        
    long timeout = 3;
    boolean threadSafe = false;

    JCoinbaseClient client = JCoinbaseClientFactory
        .build(
            "yourApiKey", // Your api key generated by Coinbase in your profile settings
            "yourSecret", // Your secret generated by Coinbase in your profile settings
            "apiVersion", // The Coinbase API version defined in your profile settings
            timeout, // A long value that defines the timeout in seconds for all requests. Recommended value is 3
            threadSafe // A boolean defining if the JCoinbaseClient should be build as a thread safe singleton
        );
                        
                    

Notice that, if you pass null for the api key, the secret and the api version, you won't be able to access non-public data : user, account, addresses, transactions, buy, sell, deposit, withdrawals and payment methods.

                        
    // Get DataService that you can use to call Coinbase users data
    UserService dataService = client.user();
    CallResult<Seq<CoinbaseError>, ExchangeRates> result = dataservice.getExchangeRates("BTC");
    // Or directly make a request by calling
    CallResult<Seq<CoinbaseError>, ExchangeRates> result =  client.data().getExchangeRates("BTC");
                        
                    

Please note that, by default, returned values use Vavr data types for objects like Collections or Option. So if you don't want to use Vavr, you can always get java objects via the api. For example :

                        
    CallResult<io.vavr.collection.Seq<CoinbaseError>, User> currentUser = client.user().getCurrentUser();
    CallResult<java.util.List<CoinbaseError>, User> currentUser = client.user().getCurrentUserAsJava();
                        
                    

For further information on Vavr, please take a look at : www.vavr.io