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Answer ALL questions
You are advised to read the Appendix before attempting any of these questions.
You are provided with a BlueJ project in the folder c:\exam\cities. You MUST use
this project for all of your answer. Note that BlueJ automatically saves your work so
you do not need to use “save” or “save as” to save any of your answers. Work saved
outside of c:\exam\cities may not be collected.
1. The first task is to edit the Java class called Location. Be careful not to change
the method that has already been written in this class, write your code above that
method. Give the class:
a) TWO instance variables. One holds the latitude (type double) and the other
holds the longitude (type double); (1 mark)
b) A constructor with two parameters, the latitude and the longitude. The body of
the constructor should initialise the values of the two instance variables from
the values of the parameters. Note also that long is a reserved word in Java
and so cannot be used as the name of a variable. (2 marks)
c) An accessor method to return the latitude AND an accessor method to return
the longitude. (2 marks)
d) Write a method to test equality of a location object against another location
object. Your method should be called equals and it will have ONE parameter
of type Location. This method will return true if this location has the same
latitude and longitude as the location passed as the parameter value.
Otherwise it will return false.
(6 marks)
After completing the above, you should manually construct an object from your
Location class in BlueJ and call each of the methods to ensure it works. Use the
object inspector to ensure that the instance variables have been assigned
properly. Construct more Location objects as necessary to test your equals
method correctly returns true or false as described.