As I’ve talked to teams about the idea that we hoard unused code, I’ve heard comments like these: “I don’t know what this code does, so I don’t want to get rid of it, but I would love to.” "I could clean that up, but I have other priority issues and don’t have time for that." “We never prioritize clean up. Often, these are public methods or classes that just aren’t called or have commented/modified annotations. Although our IDEs and analyzers can identify fully dead code, the frustration point is code that looks alive but just isn’t used. Each time they change something, they scroll past methods. Dead Code Removal If you’re a senior developer helping new teammates, consider the work it takes to onboard new members and for them to learn your codebase. ![]() Essentially, as it runs, the JVM streams off its first-call method invocation log to a central location to track "have we used this method recently." When the method appears in the code inventory, the answer is yes - if the method does not appear, then it becomes a candidate for removal of that unused code. Everything we normally read is about working with new frameworks, new tools, and new techniques - but one thing many of us ignore is improving velocity by simply getting rid of things we no longer need. Over the last few months, I’ve been working on a way to help development teams maintain less code. Sadly, development teams have a similar problem with their source code, which has grown into a cluttered mess. Do you remember the first time you walked into your garage, empty and sparkling, yawning with the promise of protecting your vehicles and power tools? How did it look the last time you walked in? If you’re like many of us, the clutter of long-closed boxes taunts you every time you walk around them, losing precious minutes before you can get to the objects you need while your car sits in the driveway. As the codebase becomes cluttered and unwieldy, development teams can become mired in mystery code that slows development and lowers morale. Unused code adds time and burden to maintaining the codebase, and removing it is the only cure for this side of “more cowbell.” Unfortunately, it’s not always obvious whether developers can remove certain code without breaking the application. We thank you in advance for your help!–The DZone Publications team Your responses help shape the narrative of our Trend Reports, so we cannot do this without you. (And enter for a chance to win 1 of 5 $100 gift cards!) Participate in Our Research Over the coming weeks, we will compile and analyze data from hundreds of DZone members, and observations will be featured in the "Key Research Findings" of our November Trend Report, Observability and Application Performance: Building Resilient Systems. ![]() ![]() In this year's survey, we will further investigate key performance topics including: Observability challenges and techniques Application performance and monitoring Site reliability considerations Our community members have a direct hand in driving the research covered in the report, and this is where we could use your anonymous insights! We're asking for ~7 minutes of your time to share your experience. (person.Do you have experience with observability, monitoring, and/or application performance? If so, look no further than our annual Observability + Application Performance research survey! Building our most performant and resilient applications not only requires monitoring or alerts - it stretches far deeper to a world of data, telemetry, and observability. IPerson person= (IPerson) resource.getContents().get(0) Resource resource = resSet.getResource(URI Resource resource = resSet.createResource(URI ResourceSet resSet = new ResourceSetImpl() Register the XMI resource factory for the. IPerson person = factory.createIPerson() ![]() create the content of the model via this program MymodelFactory factory = MymodelFactory.eINSTANCE Retrieve the default factory singleton Package .observers import model.IPerson import model.IPersonList import model.ModelFactory import .notify.Adapter import .notify.Notification import. public class ElementObserver
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