Lambda can be replaced with anonymous class

Reports lambda expressions that can be replaced with anonymous classes.

Expanding lambda expressions to anonymous classes may be useful if you need to implement other methods inside an anonymous class.

Example:

s -> System.out.println(s)

After the quick-fix is applied:

new Consumer<String>() {
  @Override
  public void accept(String s) {
    System.out.println(s);
  }
}

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.

LambdaCanBeReplacedWithAnonymous

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