Lambda parameter type can be specified

Reports lambda parameters that do not have their type specified and suggests adding the missing type declarations.

Example:

Function<String, Integer> length = a -> a.length();

After the quick-fix is applied:

Function<String, Integer> length = (String a) -> a.length();

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.

LambdaParameterTypeCanBeSpecified

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 | Code style issues

This inspection depends on the Java feature 'Lambda expressions', which is available since Java 8.

Inspection Details
By default bundled with:	IntelliJ IDEA 2024.2, Qodana for JVM 2024.2,
Can be installed with plugin:	Java, 242.22892

Last modified: 11 September 2024