NewInstance

I've been using some proprietary frameworks and libraries, that are using Files objects, and only File objects, everywhere in the interfaces. It's not that is bad to have methods accepting File objects, but it's not wise to accept only that. For example the DOM/SAX XML parser in the JDK, accept File object but includes also [...]

Since it has been introduced in JDK 1.5, I have loved the Executor abstraction over multi threaded execution. Basically you define tasks, implementing Runnable or Callable interfaces, and you submit those tasks to an Executor implementation, knowing that before or later the task will be processed. It's the Executor who knows how the tasks must [...]