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2024.3

Conditional can be replaced with Optional

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New
Last modified: 03 December 2024

Reports null-check conditions and suggests replacing them with Optional chains.

Example:

After applying the quick-fix:

While the replacement is not always shorter, it could be helpful for further refactoring (for example, for changing the method return value to Optional).

Note that when a not-null branch of the condition returns null, the corresponding mapping step will produce an empty Optional possibly changing the semantics. If it cannot be statically proven that semantics will be preserved, the quick-fix action name will contain the "(may change semantics)" notice, and the inspection highlighting will be turned off.

This inspection depends on the Java feature 'Stream and Optional API', which is available since Java 8.

New in 2018.1