Runtime errors occur when something goes wrong in the normal execution of a program. When severe enough, these errors abruptly terminate an application. To help programmers both anticipate and recover ...

Console will spawn this message and crash for while. [09:30:30] [ForkJoinPool.commonPool-worker-19/WARN]: java.lang.IllegalStateException: Asynchronous entity world add! [09:30:30] ...

Hello, when running the crawler with multiple threads, I get the following error: INFO [AbstractCrawler] WM Search: 100% completed (23343 processed/23343 total) INFO ...

Have you ever wondered why the java.util.Collections class includes various “empty” class methods, which return immutable empty collections and immutable empty iterators? This post answers this ...

With the increasingly complexity of concurrent applications, many developers find that Java’s low-level threading capabilities are insufficient to their programming needs. In that case, it might be ...

I've had this assignment over my head for months. I didn't finish it on time for one of my classes, so I pretty much abandoned it- planning to come back to it after the semester and get things working ...

Buffered iterators work in a similar fashion as BufferedInputStreams and can reduce delays in an iterator series. We’ll walk you through some sample code line by line to demonstrate the process. In ...