Empty enum declartions are allowed where other static declarations are not

Tried on Tiger-Beta3-Build 59, solaris

Please See the code below:-

/**Empty enum declarations are allowed where other
  *static declarations are not allowed.
  */
     

import java.util.*;

class B {
  
}

class A {

   enum COLOR{RED, GREEN};
   
   public B check() {
     //enum CHECK{}; ->compilation error enum types must not be local
     return new B() {
                      //static int k =0; -> Compilation error static inside inner class
                      //public static void show() {} -> compilation error static inside inner class
                      enum STRENGTH{}; // compiles silently
                      //enum STRENGTH{HARD,SOFT}; // gives compilation error non static variable this cannot be refrenced from a static context
                     };
   }
}

public class Test16 {
   
   public void assertion() {
     A ref_A = new A();
     B ref_B = ref_A.check();
   }
   
   public static void main(String args[]) {
     Test16 ref = new Test16();
     ref.assertion();
   
   }

}