The island nation of Balloo charges citizens an income tax each year the tax rate is based ln
earned income $0-9,000. tax rate 0
$10,000-$19,000 . 2% tax rate
20,000-29,000 . 3% tax rate
$30,000-39,000. 4% tax
$40,000 or more , 5%
define a class called Tax the class accepts the value representing the invisible income
include a constructor that accepts and initializes an instance variable representing the individuals salary
an accessor method that validates the salary as being positive value
a mutator method that determines how much tax an individual should pay
deifne the percentages as class constants
declare any instance variables you think necessary for this class
