java - Dagger 2 not generateing components on Eclipse -

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i have created java application eclipse , i'm using maven package management. several days ago able configure application work dagger 1 (adding dependencies pom file, enabling annotation processing , adding dagger, dagger-compile, javax , javawriter jars factory path). after several discussion colleagues decided use dagger 2. tried migrate dagger 1 implementation dagger 2 following dagger 2 documentation, did not work.

for unexplained reason @component class dagger prefix not generated.

because of decided try dagger 2 coffee sample.

i created new eclipse java project, converted maven, added sample code , dagger 2 dependencies pom file: 

 <dependency>     <groupid>com.google.dagger</groupid>     <artifactid>dagger</artifactid>     <version>2.0.1</version>   </dependency>   <dependency>     <groupid>com.google.dagger</groupid>     <artifactid>dagger-compiler</artifactid>     <version>2.0.1</version>     <optional>true</optional>   </dependency>

my build failed following error: 

exception in thread "main" java.lang.error: unresolved compilation problem:      daggercoffeeapp_coffee cannot resolved

i extracted coffee component interface separate file (named coffee.java) , tried again got same error.

i removed factory path jars dagger 1, result still same. if try add dagger 2 jars, multiple problems have occurred window following error text errors occurred during build. errors running builder 'java builder' on project 'dagger'. com/google/common/collect/setmultimap

i found out problem occurs when add dagger-compiler jar.

if remove every jar factory path build still fails.

i tried find daggercoffee file, should automatically generated couldn't find it.

how can use dagger 2 eclipse? red documentation several times , spend day researching this, no luck far.

it works using m2e-apt. no need add custom libs:

  • install m2e-apt
  • window -> preferences -> maven -> annotation processing: select "automatically configure jdt apt"
  • update maven project

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