![]() ![]() JMH annotation processor: :jmh-generator-annprocess (in "provided" scope ).When you create a project yourself, you need to add the following two dependencies: You can copy the code directly into your IDE or clone it as a Maven project from my GitHub repository. Source code of the microbenchmarksīelow you find the complete source code of the int-to-String benchmark. IntelliJ comes with a JMH plugin by default so that you can run the benchmark tests directly in your IDE. ![]() Tests are repeated hundreds of thousands of times, and the actual measurement process is only started after a warm-up phase to give the just-in-time compiler sufficient lead time for code optimization.Ī good tutorial for beginners can be found on. JMH is a framework that facilitates benchmark tests for short code sections and provides meaningful measurements in milli-, micro- and nano-second ranges. To find out which of the options is the fastest, I ran several benchmarks with the Java Microbenchmark Harness – short: JMH. Performance measurements of the int-to-String conversion In the following sections, I first perform detailed benchmarks and then interpret the results based on the Java source code and the generated bytecode. The following four options are available (apart from intentionally more complicated variants): If you want to skip the details, you can use this link to scroll down directly to the result. I analyze the measurement results looking at the Java source code and also the generated bytecode. I present four variants and measure and compare their speed using JMH microbenchmarks. The answer is probably surprising for some. In this article, I show you how to convert an int into a String in Java the fastest way.
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