When you write code, you build it with the idea that each function will be tested as a stand-alone unit in a controlled way.

You can use the SearchTweetsCompile.bat and SearchTweetsRun.bat files provided in this article's source code download to compile and run the TwitterSearchConnector class as a stand-alone application.

Components can be small pieces of code, such as modules, or larger chunks, such a stand-alone programs like database management systems.