本文作者记录了一次代码中的踩坑经历，一行很简单的代码在不同的场景下可能也暗藏玄机，希望大家看完都有所收获。 首先请大家花点时间阅读以下的代码块，看看代码是否存在问题或者隐患。 PostTask.java 如果你已经发现了所有的问题和隐患，那么恭喜你 ...

In the world of IDE-based development, programmers can easily become detached from JDK and the underlying technology that makes their applications work. Here is a list of the five most useful Java ...

Generics make your code more flexible and easier to read, and they help you avoid ClassCastExceptions at runtime. Get started with this introduction to using generics with the Java Collections ...

Do you need to know how to sort Java objects in a collection, array, or map? Here's how to use the Comparable and Comparator interfaces and avoid ClassCastExceptions. Programmers frequently need to ...