$ javap -p NonCapturing*
final class NonCapturing$$Lambda$1 implements java.lang.Runnable {
  private static final NonCapturing$$Lambda$1 instance;
  private NonCapturing$$Lambda$1();
  public void run();
  static {};
  public static java.lang.Runnable lambdaFactory$();
}
Compiled from "Java8MethodRef.java"
class NonCapturing {
  NonCapturing();
  public static void main(java.lang.String...);
  private static void run(java.lang.Runnable);
  static void sayHi();
  static void access$lambda$0();
}

$ javap -p Capturing*
final class Capturing$$Lambda$1 implements java.lang.Runnable {
  private final Capturing arg$1;
  private Capturing$$Lambda$1(Capturing);
  private static java.lang.Runnable get$Lambda(Capturing);
  public void run();
  public static java.lang.Runnable lambdaFactory$(Capturing);
}
Compiled from "Java8MethodRef.java"
class Capturing {
  Capturing();
  public static void main(Capturing);
  private static void run(java.lang.Runnable);
  void sayHi();
  static void access$lambda$0(Capturing);
}