If you have another Eclipse release than Galileo choose the appropriate url.Ĭlick Next, Accept licences and finish the installation process.Ģ) In Eclipse create Android project to which you want to add C/C++ code (if you already don’t have one).įor this tutorial I’ve created simple MyAndroidProject.ģ) In file manager create jni/ directory in your project directory and place your C/C++ sources file here.
Download it from and unpack it somewhere.ġ) Install CDT (C/C++ Development Tools) into Eclipse.Ĭhoose Help->Install New Software… from the main menu.Ĭhoose as the source site. You need to have Google ADT (Android Development Tools) installed.
You should work with ObjectWriter and a TypedReference directly: static final ObjectWriter UW = DatabindCodec.mapper().Programming in C/C++ on Android is just awesome! This tutorial shows how to setup Eclipse for using C/C++ together with Java in Android projects. Json.encode will use runtime reflection and after you get the json payload in String form, internally Vertx will have to convert the String to a Buffer using Buffer::buffer(String) which in turn will use String::getBytes, so you are actually allocating a large String and copying it in every request. Rust optimizes serialization by generating code to emit serialization instructions for serde decorated structs. To be fair you should not just use vanilla Json.encode(users). Given that so much compilation is moving to the cloud build time should be a concern. I'm not saying Java is the best but we really should to take into account more things than this shit runs 30% faster in production. The cloud is largest energy user in the world. But on a build machine that might not be the case particularly if you are targeting multiple platforms so it might even be worse. The build times above are based on them being cached and I checked that. The rust solution uses two custom crates. Rust runs in 1.00 seconds but compiles in 9.67 seconds
Java runs in 2.48 seconds and compiles in 1.5 seconds Oh and if you need proof on the build time of Rust being pretty slow you can use what the study used which was the Great Language Shootout. If you need some citation that Java does a good job with being green on runtime you can look at this study: I don’t have actual numbers for this but I’m betting Java is a greener language than Rust for most business applications.ĮDIT: I'm saying build energy cost PLUS production runtime cost for Java might be the best of any language especially if you are building far more than you are serving which is very often the case with enterprise applications compared to mass consumer applications (e.g. Even more so if you are using incremental compilation like JDT.
Just think about how often you compile on your own machine (then multiply by number of developers) and if you are using dependency management properly as well shared snapshot repository the savings might be even more. Depending on how many developers you have and how often your build pipeline the cost of that alone might out weigh the cost savings (energy) in production. Rust takes roughly 8 times longer to compile than Java. Yes I said that and let me explain why: build time. Java is arguably “greener” eg more environmentally friendly than Rust and C++ depending on scale.