Optional call chain can be simplified

Reports Optional call chains that can be simplified. Here are several examples of possible simplifications:

optional.map(x -> true).orElse(false) → optional.isPresent()
optional.map(x -> Optional.of(x.trim())).orElseGet(Optional::empty) → optional.map(String::trim)
optional.map(x -> (String)x).orElse(null) → (String) optional.orElse(null)
Optional.ofNullable(optional.orElse(null)) → optional
val = optional.orElse(null); val != null ? val : defaultExpr → optional.orElse(defaultExpr)
val = optional.orElse(null); if(val != null) expr(val) → optional.ifPresent(val -> expr(val))

Locating this inspection

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.

SimplifyOptionalCallChains

Via Settings dialog

Path to the inspection settings via IntelliJ Platform IDE Settings dialog, when you need to adjust inspection settings directly from your IDE.

Settings or Preferences | Editor | Inspections | Java | Verbose or redundant code constructs

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

New in 2017.2

Last modified: 18 June 2024