2021年4月22日 · NUM_ITERS = 100 Java: 3843114 ns Rust: 29072345 ns NUM_ITERS = 1000 Java: 1014829974 ns Rust: 28402166953 ns So, without the println statements, Java performs better than Rust in both cases. I simply want to know that why that is the case. Java has the Garbage Collector running and other overheads.

2015年5月15日 · An alternative way and the most optimal way to call rust code from java is to use GraalVM. In my opinion, it's the best option if performance is the primary key thing in your case. GraalVM is a high-performance runtime that provides significant improvements in application performance and efficiency which is ideal for microservices.

2022年9月13日 · Something that is proving useful to me was compiling the dependencies and the library per se in .jar files. And also add my current working directory to the java classpath. As additional info. To correctly call the java code from rust, the name of the packages must be consistent with the routes based on the root of the rust project.

2019年6月30日 · What Rust code is needed to invoke the Java method and access the freshly-populated rgbs array? I intend to call ToPixels.renderToPixelsShape3 from a Rust main() function, so the Rust code will have to construct the JNI environment.

2016年6月30日 · JNI-sys provides low-level JNI bindings; rust-on-mobile is a small project that uses it. Also see First steps with Rust and Java, a blog post that shows some rudiments of getting things hooked up. Finally, there's cbox, which lets you …

2021年10月7日 · Rust traits and Java interfaces both address the problem of having multiple possible implementations that adhere to some convention/protocol/interface for interacting with a value/object, without constraining the implementation details as a Java superclass does. They can be used in many of the same situations.

2021年1月6日 · Java enum-like behavior in Rust. Ask Question Asked 4 years, 2 months ago. Modified 2 years, 10 months ago.

The jni crate it is based on can hardly be considered safe (it is very easy to leak memory when you are calling java from rust). But I have managed to make it work for my limited use case. But I have managed to make it work for my limited use case.

2023年6月26日 · Yes but my Java program will be started using java command and it's not going to get started from rust so this doesn't work and I have to use from_raw which I need to use JNI_GetCreatedJavaVMs to get the pointers also JAVA_HOME is set and bin is in PATH –

2014年12月22日 · The other problem is in fact that enums in Java are, well, enums (a collection of named constants), while enums in Rust are really tagged unions or, alternatively, algebraic data types. While tagged unions can represent plain enums easily, the converse is not true. In Java-like languages ADTs are usually modeled with class hierarchies.