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ActiveJ is a full-featured alternative Java platform built from the ground up as a replacement of Spring, Spark, Quarkus, Micronauts, and other solutions. It is minimalistic, boilerplate-free, and incomparably faster, which is proven by benchmarks. ActiveJ has minimum third-party dependencies, yet features full stack of technologies with efficient async programming model and powerful DI library ActiveInject

Insert this snippet to your terminal...

mvn archetype:generate -DarchetypeGroupId=io.activej -DarchetypeArtifactId=archetype-http -DarchetypeVersion=1.1

... and open the project in your favourite IDE. Then, build the application and run it. Open your browser on localhost:8080 to see the "Hello World" message.

public final class HttpHelloWorldExample extends HttpServerLauncher { 
    @Provides
    AsyncServlet servlet() { 
        return request -> HttpResponse.ok200().withPlainText("Hello, World!");
    }

    public static void main(String[] args) throws Exception {
        Launcher launcher = new HttpHelloWorldExample();
        launcher.launch(args); 
    }
}

• The JAR file size of the example is only 1.4 MB. In comparison, minimal Spring web app size is 17 MB.
• This example cold start time is 0.65 sec.
• This example uses ActiveInject DI library which is 5.5 times faster than Guice and 100s times faster than Spring.

To learn more about ActiveJ, please visit https://activej.io or follow our 5-minute getting-started guide.

This repository contains ActiveJ platform components along with helper ActiveJ libraries:

• ActiveInject - core-inject module;
• ActiveSerializer - core-serializer module;
• ActiveCodegen - core-codegen module;
• ActiveSpecializer - core-specializer module.
• ActiveRPC - cloud-rpc module;
• ActiveFS - cloud-fs module;

You can find examples of using ActiveJ platform and all the ActiveJ libraries in examples module.