A simple apt example built with Kobalt
Switch branches/tags
Nothing to show
Clone or download
Fetching latest commit…
Cannot retrieve the latest commit at this time.
Type Name Latest commit message Commit time
Failed to load latest commit information.


A simple annotation processing example

This project demonstrates a simple annotation processor that is built with Kobalt. The annotation processor allows you to generate a Version class containing a version number that is either read from a Properties file or directly defined in the annotation.

There are two modules in this project:

  • The processor (processor/)
  • The example using the processor (example/)

The processor project defines an annotation @Version that lets you specify a version number in two ways:

  • Either provide a value for the version.
  • Or you provide a fileName pointing to a Properties file. This file contains the version number either with the default key version or with your own key, which you can specify with the propertyName attribute.

For example:

@Version(fileName = "example/src/main/properties/version.properties",
    propertyName = "example.version")
public class A {
// ...

And the content of the version.properties file:


When the annotation processor is run, it generates a source file GeneratedVersion.java with a static field containing that version number.

The example project has a single class Example which is annotated with @Version and which then displays the value of the version from the GeneratedVersion generated class.

To build and run the example:

./kobaltw run

To install and run from Kobalt:

dependencies {