3 Parts of a JFlex Specification

-- Put in here comments and import statements

-- Anything in here will be placed verbatim at the top of lex.java

-- Put in here directives, macros, and code.

-- The code will be inserted verbatim within the lex class

-- Put in here the regular expressions and Java actions

-- This is called the "Rules Section"

-- The regular expressions and actions are used to build the lexer