New instance of class annotated with @groovy.lang.Singleton

Reports new instance creation of classes annotated with @groovy.lang.Singleton. Such constructions can lead to runtime exception Can't instantiate singleton.

Example:

  @Singleton
  class Foo{
  }
  
  Foo foo = new Foo()

After the quick-fix is applied:

  @Singleton
  class Foo{
  }
  
  Foo foo = Foo.instance

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.

NewInstanceOfSingleton

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 | Groovy | Potentially confusing code constructs

Availability

By default bundled with: IntelliJ IDEA 2024.1, Qodana for JVM 2024.1,
Can be installed with plugin: Groovy, 241.18072

Last modified: 18 June 2024