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3. Your next task is implement a class that will read in the data from the data file. Call
your class ProcessCities, then implement the following:
a) The class should have TWO instance variables:
• An InputReader which will be used to read the data
• An ArrayList of City objects
(3 marks)
b) A constructor that will assign values to each of the two instance variables by
constructing objects of the appropriate type. (4 marks)
c) A method called processData which will read the data. Carefully read the
description in the Appendix which describes the format of the input file
and the methods of the InputReader. Your code should:
• Declare a local variable of type String[] and assign it the value returned
from the getInputLine method of the InputReader. The array that you
get back will contain a single value, which will be a string of digits being the
number of lines of data in the file. Convert the string of digits into an int
using the method convertToInt defined for you in the InputReader
class.
• Using a FOR statement, read the number of lines of input indicated by the
value read from the first line of the data file. In the body of the for
statement, use the getInputLine method of the InputReader to get a
line of data. Use the array of data values to:
– construct a Location object using the latitude and longitude from the
input line. Note that you will need to convert the latitude and longitude
values from a string of digits to an double. The InputReader class
has a method called convertToDouble to do that for you.
– construct a City using the name, the population, the county from the
input data and the location object.
– add the City to your ArrayList.
(15 marks)