twitter api怎么使用?

package org.scribe.examples;import java.util.Scanner;import org.scribe.builder.*;import org.scribe.builder.api.*;import org.scribe.model.*;import org.scribe.oauth.*;public class TwitterExample{  private static final String PROTECTED_RESOURCE_URL = "http://api.twitter.com/1/account/verify_credentials.xml";    public static void main(String[] args)  {    OAuthService service = new ServiceBuilder()                                .provider(TwitterApi.class)                                .apiKey("6icbcAXyZx67r8uTAUM5Qw")                                .apiSecret("SCCAdUUc6LXxiazxH3N0QfpNUvlUy84mZ2XZKiv39s")                                .build();    Scanner in = new Scanner(System.in);    System.out.println("=== Twitter's OAuth Workflow ===");    System.out.println();    // Obtain the Request Token    System.out.println("Fetching the Request Token...");    Token requestToken = service.getRequestToken();    System.out.println("Got the Request Token!");    System.out.println();    System.out.println("Now go and authorize Scribe here:");    System.out.println(service.getAuthorizationUrl(requestToken));    System.out.println("And paste the verifier here");    System.out.print(">>");    Verifier verifier = new Verifier(in.nextLine());    System.out.println();    // Trade the Request Token and Verfier for the Access Token    System.out.println("Trading the Request Token for an Access Token...");    Token accessToken = service.getAccessToken(requestToken, verifier);    System.out.println("Got the Access Token!");    System.out.println("(if your curious it looks like this: " + accessToken + " )");    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...");    OAuthRequest request = new OAuthRequest(Verb.GET, PROTECTED_RESOURCE_URL);    service.signRequest(accessToken, request);    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("Thats it man! Go and build something awesome with Scribe! :)");  }}