avaje-inject

APT based dependency injection for server side developers - https://avaje.io/inject

Example module use

module org.example {

  requires io.avaje.inject;

  provides io.avaje.inject.spi.Module with org.example.ExampleModule;
}

Similar to Dagger (https://google.github.io/dagger/)

• Uses Java annotation processing for dependency injection
• Generates source code
• Avoids any use of reflection or classpath scanning (so low overhead and fast startup)
• A Library only (a DI library and that's it ~25k in size)

Differences to Dagger

• Aimed specifically for server side development (rather than Andriod)
• Supports lifecycle methods with @PostConstruct and @PreDestory
• Supports @Factory and @Bean
• Provides API to obtain all bean instances that implement an interface
• Provides API to obtain all bean instances that have an annotation
• Integration with server side web frameworks Javalin, Helidon

Spring DI

For comparison with Spring DI look at https://avaje.io/inject/#spring