Exploit caching for improved performance – caching is one of the best ways to reduce redundant object instantiation and function calls.Employ StringBuilder for improved efficiency – strings are nearly unavoidable in most applications, but the “+=” operation is highly inefficient.Tidy up your operating system – messy operating systems need maintenance to run applications to the best of their ability. ![]() Increase LAN and WAN bandwidth – not all functions interact with local hardware if your application talks with remote systems, your network infrastructure may be to blame.Upgrade system hardware – poor application performance may not be rooted in poor code and algorithms instead, the underlying cause may be related to the system running the application.Avoid recursion when possible – recursion is a necessary evil in some cases, though it should be used sparingly.Clean up code and revise algorithms – clean code is easier to maintain, edit, read, and refine adjusting your algorithms reduces tautological function calls.Perform profiling and load testing – profiling your Java application will help uncover pain points and bottlenecks.How to improve Java application performance – 10 Stepsīefore we dig deeper into each specific step, we wanted to give you a high-level overview regarding how to improve the performance & speed of Java applications, as follows: In addition, note that local operating system problems often affect application performance. Local hardware like RAM and CPU cycles affect application performance, as do other resources like network bandwidth. In addition to algorithmic and coding flaws, resource deficiencies are another common cause. Rather, it only carries out the instructions it is given. The computer sometimes doesn’t understand your intention. You’re going to make mistakes as you build an application – there’s no way around it. ![]() Though IDE’s and code editors highlight test and objects to make them more human-readable, there is a communication gap between computers and humans. Naturally, the first two causes are bad design and sub-par coding. The causes of an underperforming application are vast, though the main causes are a small handful of problems. Today, we’re going to be looking at the best ways to improve the performance of applications written in Java, but not JavaScript. JavaScript, on the other hand, was designed to create web applications and frequently coincides with other web technologies like HTML and CSS. Though they are both object-oriented technologies, Java is a development environment in which programmers can code applications designed to run locally in a system’s physical memory. In short, no Java and JavaScript are two completely different technologies. Whether you’re a developer who has access to source code or simply an end user trying to speed up an irritatingly-slow Java application, we have good news: there are steps you can take to improve performance. But when a computer freezes or an application bogs down a laptop or mobile device, poor performance increases stress. When computers and applications run smoothly, we tend to take them for granted. We have more than 4000+ system properties to configure the runtime and 600+ technology extensions libraries so it might be overkill unless one has a complex problem to solve and/or using the same tool across development, test and production is paramount.Living in the digital era is as much a blessing as it is a frustration. I should be point out that JXInsight is designed for software performance engineers and not just for the occasional adhoc profiling session. I am the architect of JXInsight so of course I am completely biased but at the same time I am probably more qualified than most in the Java industry to make such a claim since I have devoted the last 8 years to performance analysis for some of the most demanding of Java/J2EE application in production. JXInsight's Probes technology is also the only one that could even run in production considering that we out perform netbeans profiler by 20x and yourkit 100x in SPECjvm2008 benchmarks. ![]() ![]() None of the tools other than JXInsight perform real database transaction analysis:
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