[KAFKA-9234] Consider using @Nullable and @Nonnull annotations

• Type: Improvement
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Component/s: admin, clients, consumer, KafkaConnect, producer , streams, streams-test-utils
• Labels: beginner newbie
• Assignee: Manasvi Gupta
• Reporter: Matthias J. Sax
• Created: 27/Nov/19 02:36
• Updated: 08/Dec/19 01:35

Description

Java7 was dropped some time ago, and we might want to consider usein Java8 `@Nullable` and `@Nonnull` annotations for all public facing APIs instead of documenting it in JavaDocs only.

This tickets should be broken down in a series of smaller PRs to keep the scope of each PR contained, allowing for more effective reviews.