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Java / Java 21 Coding Standards Interview Questions

List the common Javadoc conventions required in Java coding standards?

Javadoc conventions define what must be documented and how the comment is written so generated API docs stay useful:

  1. Every public class, interface, and public method has a Javadoc comment describing its purpose in a single leading sentence.
  2. @param is included for every parameter, describing what it represents, not just repeating its name.
  3. @return describes what is returned, including any special values like null or an empty collection.
  4. @throws lists every checked exception and any unchecked exception the caller should reasonably anticipate.
  5. Comments describe behavior and contract, not implementation detail that can drift out of sync with the code.

Private and package-private members are generally exempt unless their logic is non-obvious, since Javadoc is meant to document a contract for external callers, not to narrate every line for the author.

A Javadoc @throws tag should list:
Javadoc comments are meant to describe:

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