TestOAuth.java

package com.example;

import com.github.scribejava.core.builder.ServiceBuilder;
import com.github.scribejava.core.model.OAuth2AccessToken;
import com.github.scribejava.core.model.OAuthRequest;
import com.github.scribejava.core.model.Response;
import com.github.scribejava.core.model.Verb;
import com.github.scribejava.core.oauth.OAuth20Service;

import java.io.IOException;
import java.util.Scanner;

public class TestOAuth {
    private static final String PROTECTED_RESOURCE_URL = "https://api.unsplash.com/me";

    public static void main(String[] args) throws IOException {
        final OAuth20Service service = new ServiceBuilder()
                .apiKey("your_apikey")
                .apiSecret("your_apisecret")
                .scope("read_user")
                .callback("urn:ietf:wg:oauth:2.0:oob")
                .build(UnsplashApi.instance());
        final Scanner in = new Scanner(System.in);
        System.out.println("Hello World!~Twitter checkin in");
        System.out.println();

        System.out.println("Authorize here:");
        System.out.println(service.getAuthorizationUrl());
        System.out.println("Past here:");
        final String oauthVerifier = in.nextLine();
        System.out.println();

        // Trade the Req Tokenn and Verifier for Access Token
        System.out.println("Trading req for access");
        OAuth2AccessToken accessToken = null;
        try {
            accessToken = service.getAccessToken(oauthVerifier);
        } catch (IOException e) {
            e.printStackTrace();
        }
        System.out.println("Got the Access Token!");
        System.out.println("(if your curious it looks like this: " + accessToken
                + ", 'rawResponse'='" + accessToken.getRawResponse() + "')");
        System.out.println();

        // Now let's go and ask for a protected resource!
        System.out.println("Now we're going to access a protected resource...");
        final OAuthRequest request = new OAuthRequest(Verb.GET, PROTECTED_RESOURCE_URL, service);
        service.signRequest(accessToken, request);
        final Response response = request.send();
        System.out.println("Got it! Lets see what we found...");
        System.out.println();
        System.out.println(response.getBody());

        System.out.println();
        System.out.println("That's it man! Go and build something awesome with ScribeJava! :)");
    }
}

UnsplashApi.java

package com.example;

import com.github.scribejava.apis.PinterestApi;
import com.github.scribejava.core.builder.api.DefaultApi20;
import com.github.scribejava.core.model.OAuthConfig;
import com.github.scribejava.core.model.OAuthConstants;
import com.github.scribejava.core.model.ParameterList;

/**
 * Created by ryan on 6/17/16.
 */
public class UnsplashApi extends DefaultApi20 {
    protected UnsplashApi() {
    }

    private static class InstanceHolder {
        private static final UnsplashApi INSTANCE = new UnsplashApi();
    }

    public static UnsplashApi instance() {
        return InstanceHolder.INSTANCE;
    }

    @Override
    public String getAccessTokenEndpoint() {
        return "https://unsplash.com/oauth/token";
    }

    @Override
    protected String getAuthorizationBaseUrl() {
        return "https://unsplash.com/oauth/authorize";
    }
}