WebCollector
WebCollector is an open source web crawler framework based on Java.
WebCollector is an open source web crawler framework based on Java.It provides some simple interfaces for crawling the Web,you can setup a multi-threaded web crawler in less than 5 minutes.
Github:
https://github.com/CrawlScript/WebCollector
Demo:
https://github.com/CrawlScript/WebCollector/blob/master/YahooCrawler.java