[KAFKA-10835] Replace Runnable and Callable overrides with lambdas in Connect

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 2.8.0
• Component/s: connect
• Assignee: Lev Zemlyanov
• Reporter: Konstantine Karantasis
• Created: 10/Dec/20 22:06
• Updated: 09/Feb/21 05:39
• Resolved: 09/Feb/21 05:39

Description

We've been using Java 8 for sometime now of course. Replacing the overrides from the pre-Java 8 era will simplify some parts of the code and will reduce verbosity. 

Issue Links

• links to: GitHub Pull Request #9867