Java Tricky Program 11 - Double Brace Initialization

Double Brace Initialization is one of the rarely used concept in java - this is combination of two braces. The outer one is creating an anonymous subclass and in the inner braces we call methods or do some initialization of variables.

[kunaljamdade]

when i check this class file in jdb jui tool in the second when we create hashset validcode1 it shows just
HashSet local1 = new HashSet() {};
why it not show the initialization braces?