Artem Malinko questions

• How to select or join futures with different types?
• Akka. How to mock child actors in java?
• RabbitMQ. Java client. Is it possible to acknowledge message not on the same thread it was received?
• How can I consume paginated resource using Monix in Scala?
• Akka streams. Group by, aggregate for some time and emit result
• How to map over Hlist of objects that extend common trait?
• Http status for error response because of business exception. Syntax is correct and request makes sense
• Dynamic attributes in a jsp tag
• Scala case class private constructor isn't private
• Jackson. Deserialize missing properties as empty Optional<T>

Artem Malinko answers