Peter wites:

Speaking of names, the following test:

package pkg;
  
public class Test {
     public static void main(String[] args)
     {
         Runnable r = () -> {};
         Class<?> c = r.getClass();
         Class<?> ac = java.lang.reflect.Array.newInstance(c, 0).getClass();
         System.out.println("c: " + c.getName() + " / " + c.getSimpleName());
         System.out.println("ac: " + ac.getName() + " / " + ac.getSimpleName());
      }
}
 

Prints:

c: pkg.Test$$Lambda$1/798154996 / Test$$Lambda$1/798154996
ac: [Lpkg.Test$$Lambda$1; / Test$$Lambda$1/798154996[]
 
 
I think the array class name is missing the trailing '/798154996' just before ';'