ADDITIONAL SYSTEM INFORMATION :
wsl2-ubuntu 22.04
Linux 5.15.167.4-microsoft-standard-WSL2 #1 SMP Tue Nov 5 00:21:55 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux

Java Version:
java 21.0.7 2025-04-15 LTS
Java(TM) SE Runtime Environment (build 21.0.7+8-LTS-245)
Java HotSpot(TM) 64-Bit Server VM (build 21.0.7+8-LTS-245, mixed mode, sharing)

Javac Version:
javac 21.0.7


A DESCRIPTION OF THE PROBLEM :
The following test program can be compiled by javac, however, the code is invalid as the local class is used in a static context.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
javac Test.java

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
The source code should be rejected as invalid.
ACTUAL -
The source code compiles successfully.

---------- BEGIN SOURCE ----------
public class Test {
    public static void main(String[] args) {
        class Nest {
            public static void main(String[] args) {
                Nest outer = new Nest();
            }
        }
    }
}
---------- END SOURCE ----------