Question

Language: Java

For this file, it should be concrete. I don't know how to write a code with the following private field & associated getter methods:

• final String NAME - a constant that represents the name of a location

• final double LATITUDE - a constant that represents the latitude (x) of that location

• final double LONGITUDE - a constant double represents the longitude (y) of that location

Then, create a following constructor to initialize Location(String name, double lat, double long)

After, write the following methods:

1. public boolean equals(Object other). This returns a boolean representing whether another object is logically equivalent to this instance of Location. For two Location instances to be equivalent, their latitude and longitude must be equal. Their name’s do NOT have to be the same. Implement this method as you have been taught in the module.

2. public String toString(). This returns the String representation of this Loca- tion object’s stored information in the following format: “(name) @ ((latitude), (longitude))”. For example, a possible output of the toString() method could look like this: “CoC @ (15.32, 35.32)”

3. Getters for all fields.

Answer 1

class Location {

        final String NAME;
        final double LATITUDE;
        final double LONGITUDE;

        public Location(String nAME, double lATITUDE, double lONGITUDE) {
                NAME = nAME;
                LATITUDE = lATITUDE;
                LONGITUDE = lONGITUDE;
        }

        public String getNAME() {
                return NAME;
        }

        public double getLATITUDE() {
                return LATITUDE;
        }

        public double getLONGITUDE() {
                return LONGITUDE;
        }

        @Override
        public boolean equals(Object obj) {
                if (this == obj)
                        return true;
                if (obj == null)
                        return false;
                if (getClass() != obj.getClass())
                        return false;
                Location other = (Location) obj;

                return (LATITUDE == other.LATITUDE) && (LONGITUDE == other.LONGITUDE);
        }

        public String toString() {
                return NAME + " @ (" + LATITUDE + ", " + LONGITUDE + ")";
        }
}