Java-style call with Kotlin extension alternative

Reports places where a Kotlin Spring extension can be used instead of a call with a ::class.java argument.

Spring provides a number of Kotlin extensions for generic Java methods with type token parameters. The inspection reports Spring API usages where Java-style calls can be replaced by Kotlin extension calls without changing the semantics.

Example:

import org.springframework.core.env.PropertyResolver

fun example(resolver: PropertyResolver): String? =
    resolver.getProperty("test.property", String::class.java)

After the fix is applied:

import org.springframework.core.env.PropertyResolver
import org.springframework.core.env.getProperty

fun example(resolver: PropertyResolver): String? =
    resolver.getProperty<String>("test.property")

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.

JavaStyleCallReplaceableByKotlinExtension

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 | Spring | Kotlin

Inspection ID: JavaStyleCallReplaceableByKotlinExtension

Suppressing Inspection

You can suppress this inspection by placing the following comment marker before the code fragment where you no longer want messages from this inspection to appear:

//noinspection JavaStyleCallReplaceableByKotlinExtension

More detailed instructions as well as other ways and options that you have can be found in the product documentation:

IntelliJ IDEA 2025.3

Inspection Details
By default bundled with:	IntelliJ IDEA 2025.3, Qodana for JVM 2025.3,

Last modified: 03 December 2025