This demonstrates using JSR 330 annotations and JSR 330's `@Qualifier` (on Spring)

Jsr330.java

package jsr330;

import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;

import javax.annotation.PostConstruct;
import javax.inject.Inject;
import javax.inject.Named;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

import static jsr330.Jsr330.Platform;

@Configuration
@ComponentScan
public class Jsr330 {

    public static void main(String[] args) {
        new AnnotationConfigApplicationContext(Jsr330.class);
    }

    @Inject
    @Platform(Platform.OperatingSystems.ANDROID)
    private MarketPlace android;

    @Inject
    @Platform(Platform.OperatingSystems.IOS)
    private MarketPlace ios;

    @PostConstruct
    public void qualifyTheTweets() {
        System.out.println("ios:" + this.ios);
        System.out.println("android:" + this.android);
    }

    // the type has to be public!
    @Target({ElementType.FIELD,
            ElementType.METHOD,
            ElementType.TYPE,
            ElementType.PARAMETER})
    @Retention(RetentionPolicy.RUNTIME)
    @javax.inject.Qualifier
    public static @interface Platform {

        OperatingSystems value();

        public static enum OperatingSystems {
            IOS,
            ANDROID
        }
    }
}

interface MarketPlace {
}

@Named
@Platform(Platform.OperatingSystems.IOS)
class AppleMarketPlace implements MarketPlace {

    @Override
    public String toString() {
        return "apple";
    }
}

@Named
@Platform(Platform.OperatingSystems.ANDROID)
class GoogleMarketPlace implements MarketPlace {

    @Override
    public String toString() {
        return "android";
    }
}