ClientCredentialsExample.java

package authorization.client_credentials;

import com.wrapper.spotify.SpotifyApi;
import com.wrapper.spotify.exceptions.SpotifyWebApiException;
import com.wrapper.spotify.model_objects.credentials.ClientCredentials;
import com.wrapper.spotify.requests.authorization.client_credentials.ClientCredentialsRequest;
import org.apache.hc.core5.http.ParseException;

import java.io.IOException;
import java.util.concurrent.CancellationException;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.CompletionException;

public class ClientCredentialsExample {
  private static final String clientId = "zyuxhfo1c51b5hxjk09x2uhv5n0svgd6g";
  private static final String clientSecret = "zudknyqbh3wunbhcvg9uyvo7uwzeu6nne";

  private static final SpotifyApi spotifyApi = new SpotifyApi.Builder()
    .setClientId(clientId)
    .setClientSecret(clientSecret)
    .build();
  private static final ClientCredentialsRequest clientCredentialsRequest = spotifyApi.clientCredentials()
    .build();

  public static void clientCredentials_Sync() {
    try {
      final ClientCredentials clientCredentials = clientCredentialsRequest.execute();

      // Set access token for further "spotifyApi" object usage
      spotifyApi.setAccessToken(clientCredentials.getAccessToken());

      System.out.println("Expires in: " + clientCredentials.getExpiresIn());
    } catch (IOException | SpotifyWebApiException | ParseException e) {
      System.out.println("Error: " + e.getMessage());
    }
  }

  public static void clientCredentials_Async() {
    try {
      final CompletableFuture<ClientCredentials> clientCredentialsFuture = clientCredentialsRequest.executeAsync();

      // Thread free to do other tasks...

      // Example Only. Never block in production code.
      final ClientCredentials clientCredentials = clientCredentialsFuture.join();

      // Set access token for further "spotifyApi" object usage
      spotifyApi.setAccessToken(clientCredentials.getAccessToken());

      System.out.println("Expires in: " + clientCredentials.getExpiresIn());
    } catch (CompletionException e) {
      System.out.println("Error: " + e.getCause().getMessage());
    } catch (CancellationException e) {
      System.out.println("Async operation cancelled.");
    }
  }

  public static void main(String[] args) {
    clientCredentials_Sync();
    clientCredentials_Async();
  }
}