annotation based factory methods

You need java-config - the @Bean annotation.

Define your class as @Configuration and your method as @Bean

Try Java @Configuration instead:

@Configuration 
public class Config {

    @Bean
    public FooUser fooUser() {
        return new FooUser(foo());
    }

    @Bean
    public FooFactory fooFactory() {
        return new FooFactory();
    }

    @Bean
    public Foo foo() {
        return fooFactory().createFoo();
    }

}