Passing final variables to anonymous classes

Question

In final variable passed to anonymous class via constructor, Jon Skeet mentioned that variables are passed to the anonymous class instance via an auto-generated constructor.

Answer 1

In this case, it's because 100 is a constant. That gets baked into your class.

If you change x to be:

final int x = args.length;

... then you'll see Test$1(int) in the output. (This is despite it not being explicitly declared. And yes, capturing more variables adds parameters to the constructor.)