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Redundant empty primary constructor

Reports empty primary constructors when they are implicitly available anyway.

A primary constructor is redundant and can be safely omitted when it does not have any annotations or visibility modifiers. Use the 'Remove empty primary constructor' quick-fix to clean up the code.

Examples:

class MyClassA constructor() // redundant, can be replaced with 'class MyClassA' annotation class MyAnnotation class MyClassB @MyAnnotation constructor() // required because of annotation class MyClassC private constructor() // required because of visibility modifier

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.

RemoveEmptyPrimaryConstructor
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 | Kotlin | Redundant constructs

Availability

By default bundled with

IntelliJ IDEA 2024.1, Qodana for JVM 2024.1,

Can be installed with plugin

Kotlin, 241.18072-IJ

Last modified: 18 June 2024