How can I identify an anonymous inner class in a NotSerializableException

Question

I have received the following error message when trying to debug an application in NetBeans:

java.io.WriteAbortedException: writing aborted; java.io.N

Answer 1

Board$1 is the first anonymous class encountered in Board.java. For example:

class Board {
  public static void main(String[] args) {
    new Object() {}; // Board$1
    new Object() {}; // Board$2
  }
}

With an IDE like Eclipse, it's easy to spot those anonymous classes in the outline view. I'm sure NetBeans has similar views:

Answer 2

In IntelliJ (and Android Studio) one can Navigate->Class (⌘-O on mac) and paste in Board$1, and it will take you to the code for that inner class.