Question

Write a class PointCompare that implements Comparator ⟨ Point > that compares points by the following process - If the first point's y coordinate is smaller than the other point's y coordinate, it is smaller; if y is greater, it's greater. - If the y coordinates are the same, if the first point's x coordinate is smaller, it is smaller, if greater, the first point is greater. - If the points have the same coordinates, return θ

Answer 1

To implement the Comparator interface, we need to create a class called PointCompare that compares points based on their y and x coordinates. Here is an example implementation of the PointCompare class.

Step-by-step explanation:

A comparator interface is used to order the objects of user-defined classes. A comparator object is capable of comparing two objects of two different classes. Comparator is a functional interface that is used to compare two objects. A Comparator is specified with type parameter T. Its functional method, called compare, takes two arguments of type T and returns an integer.

To implement the Comparator interface, we need to create a class called PointCompare that contains a method called compare(). This method takes two arguments of type Point and returns an integer. The compare() method compares the y coordinates of the two points. If the first point's y coordinate is smaller than the other point's y coordinate, it returns a negative value.

If the y coordinate is greater, it returns a positive value. If the y coordinates are the same, it compares the x coordinates. If the first point's x coordinate is smaller, it returns a negative value. If the x coordinate is greater, it returns a positive value.

Answer 2

Code attached below

Step-by-step explanation:

The PointCompare class implements the Comparator<Point> interface, providing a custom comparison logic for comparing points. The compare method first checks the y-coordinates. If the y-coordinate of the first point is smaller than the second point, it returns -1; if greater, it returns 1. If the y-coordinates are equal, it compares the x-coordinates in a similar manner. If both y and x coordinates are the same, it returns 0, indicating that the points are equal.

This approach ensures that points are compared based on the specified criteria: first by y-coordinate, then by x-coordinate, and finally, if both coordinates are the same, they are considered equal.