Implicitly declared class can be replaced with ordinary class

Reports implicitly declared classes and suggests replacing them with regular classes.

Example (in file Sample.java):

  public static void main() {
      System.out.println("Hello, world!");
  }

After the quick-fix is applied:

public class Sample {
    public static void main() {
        System.out.println("Hello, world!");
    }
}

This inspection can help to downgrade for backward compatibility with earlier Java versions.

This inspection depends on the Java feature 'Implicitly declared classes' which is available since Java 21-preview.

New in 2024.1

Inspection Details
By default bundled with:	IntelliJ IDEA 2024.1, Qodana for JVM 2024.1,
Can be installed with plugin:	Java, 241.16690

Last modified: 29 April 2024