Custom config Provider with configuration

Provider.java

public final Foo {
  @Inject
  private Bar bar;
  
  public Foo(String config1) {
     // Do something
   }
}

public class FooProviderModule extends AbstractModule {
    @Override
    protected void configure() {
      bind(Foo.class).toProvider(FooProvider.class).in(Singleton.class);
    }
}


public class FooProvider extends Provider<Foo> {
  private final Foo fooInstance;
  
  @Inject
  public FooProvider(final com.google.inject.Injector injector, final FooConfig fooConfig) {
      this.fooInstance = new Foo(fooConfig.value1);
      
      // If Foo needs DI : 
      injector.injectMembers(this.fooInstance);
  }   
  
  @Override
  public Foo get() {
    return this.fooInstance; 
  }
}