How Netflix Uses Java - 2026 Edition #JavaOne

Posted by daviddel@reddit | programming | View on Reddit | 7 comments

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sh3rp@reddit

Looking into a thread with interviewers rejected by Netflix.

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olearyboy@reddit

private static float subscription = 10.0;

subscription = subscription * 1.5;

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todo_code@reddit

fixed it for you.

public interface ISubscriptionValueProvider {
    float getSubscriptionValue();
}


public class SubscriptionValueEntity implements ISubscriptionValueProvider {
    private final float subscription;

    public SubscriptionValueEntity(float subscription) {
        this.subscription = subscription;
    }

    @Override
    public float getSubscriptionValue() {
        return this.subscription;
    }
}


public abstract class SubscriptionFactory {
    public abstract ISubscriptionValueProvider createSubscription();
}


public class StandardSubscriptionFactory extends SubscriptionFactory {
    private static final float DEFAULT_SUBSCRIPTION_FEE = 10.0f;

     interface ISubscriptionValueProvider {
    float getSubscriptionValue();
}
public class SubscriptionValueEntity implements ISubscriptionValueProvider {
    private final float subscription;

    public SubscriptionValueEntity(float subscription) {
        this.subscription = subscription;
    }

    @Override
    public float getSubscriptionValue() {
        return this.subscription;
    }
}

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stbrumme@reddit

obviously, this isn't production-ready: you missed to implement exceptions

```public interface SubscriptionValueProvider { float subscriptionValue(); }

public final class SubscriptionValueEntity implements SubscriptionValueProvider { private final float subscription;

public SubscriptionValueEntity(float subscription) {
    if (Float.isNaN(subscription) || subscription < 0) {
        throw new IllegalArgumentException("Subscription value must be non-negative");
    }
    this.subscription = subscription;
}

@Override
public float subscriptionValue() {
    return subscription;
}

}```

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phylter99@reddit

The subscription multiplication is in a for loop

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Chemical-Fault-7331@reddit

And so is the decrease in quality content in their catalog.

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BlueGoliath@reddit

Valhalla when.