Best practice: Return Empty Collections Not Null.

Overview

Best practice: Return Empty Collections Not Null.

Example 

  // Apply: Return Empty Collections Not Null

Common Use Cases

  • Production code quality
  • Team coding standards

Pitfalls to Avoid

  • Inconsistent application across codebase
  • Clean Code
  • Effective Java

Best Practices

  • Understand when to use return empty collections not null versus simpler alternatives
  • Write unit tests covering edge cases and failure paths
  • Follow Java conventions and prefer standard library APIs when available
  • Profile before optimizing — measure impact in your specific workload