this code gets users who follow a authorized user in twitter with twitter4j.

gistfile1.java

/**
 * this code gets users who follow a authorized user in twitter with twitter4j.
 * @param twitter
 * @param screenName
 * @return if a error occurs, this method returns null
 */
public static ArrayList<twitter4j.User> getFollowingUsers2(Twitter twitter, String screenName){
	long start = System.currentTimeMillis();
	long end = 0;
	PagableResponseList<twitter4j.User> rawData = null;
	ArrayList<twitter4j.User> dataToReturn = new ArrayList<twitter4j.User>();
	int apiCallCount = 0;
	int continuousErrorCount = 0;
	boolean isLastAPICallSuccess = true;
	long lastAPICallSuccessTime = 0;

	long cursor = -1;
		while(true){
			try {
				if(isLastAPICallSuccess)
					lastAPICallSuccessTime = System.currentTimeMillis();

				rawData = twitter.getFriendsStatuses(screenName, cursor);
				apiCallCount++;
			} catch (TwitterException e) {
				isLastAPICallSuccess = false;
				String errorCode = e.getMessage().substring(0, 3);
				if(errorCode.startsWith("5") || errorCode.startsWith("4")) {
					continuousErrorCount++;
					if(continuousErrorCount >= 3) {
						System.err.println("return null because of three continuous error");
						return null;
					}
					long currentTime = System.currentTimeMillis();
					if(currentTime - lastAPICallSuccessTime > 3000){
						System.err.println("return null because of The interval of the error is too long. " + (double)(currentTime - lastAPICallSuccessTime)/1000 + "seconds");
						return null;
					}

					System.err.println(e.getMessage());
					continue;
				}

				end = System.currentTimeMillis();
				System.err.println("error " + apiCallCount + ", " + screenName + ", " + (double)(end - start)/1000 + "seconds " + ": " + e.getMessage());
				return null;
			}
			isLastAPICallSuccess = true;
			continuousErrorCount = 0;

			if(rawData == null || rawData.isEmpty())
				break;

			dataToReturn.addAll(rawData);
			System.out.println(screenName + ", " + cursor + ", " + (double)(System.currentTimeMillis() - lastAPICallSuccessTime)/1000 + "seconds");

			if(!rawData.hasNext())
				break;

			cursor = rawData.getNextCursor();
		}
	end = System.currentTimeMillis();
	System.out.println("" + screenName + " time:" + (double)(end - start)/1000 + "seconds " + apiCallCount + "counts, " + dataToReturn.size());

	return dataToReturn;
}

comment test

このコードのここが駄目ってところがありましたらforkでご指摘いただけるとありがたいです！

コメントがあると嬉しいです。