从流Twitter4j API中提取链接

Question

有人可以协助我处理此案吗？我只需要从流中提取链接（URL）（来自Twitter的推文）：

twitterStream.addListener(listener);
// sample() method internally creates a thread which manipulates TwitterStream and calls these adequate listener methods continuously.
twitterStream.sample();

FilterQuery fq = new FilterQuery();
fq.track("filter");
twitterStream.filter(fq);

提前谢谢！