Conditional can be replaced with Optional
Reports null-check conditions and suggests replacing them with Optional
chains.
Example:
return str == null ? "" : str.trim();
After applying the quick-fix:
return Optional.ofNullable(str).map(String::trim).orElse("");
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.
- By ID
Can be used to locate inspection in e.g. Qodana configuration files, where you can quickly enable or disable it, or adjust its settings.
ConditionalCanBeOptional
This inspection depends on the Java feature 'Stream and Optional API', which is available since Java 8.
New in 2018.1
Inspection Details | |
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By default bundled with: | |
Can be installed with plugin: | Java, 243.23126 |
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