Code Quality Archives

Clean Streaming Code

July 19, 2015July 14, 2015 by Lars Opitz

Close up of water gushing out of the pipe

Streaming is an awesome tool. It helps to separate concerns (e.g. iteration, filtering, execution), to avoid state and thus improves thread safety. Furthermore we can express same functionality with less code. But it’s hard to read and to test.

Really?

Getting Rid of Nasty Parameters – PMD Rule “Excessive Parameter List” Explained

July 19, 2015August 31, 2013 by Lars Opitz

I bet you’ve seen code like this when your IDE auto-completed a function call in your code and there’s no source code or Javadoc found:

emailSender.sendEmail(String arg1, 
    InternetAddress arg2, InternetAddress arg3, InternetAddress arg4, 
    String arg5, String arg6, List<EmailAttachment> arg7);

But what does this mean? In this article, I will disclose this secret and show you a few techniques for refactoring (or avoiding!) these parameter lists.