Point.java

public class Point {

    private int x, y;

    public Point() {
        this.x = 0;
        this.y = 0;
    }

    public Point(int x, int y) {
        this.x = x;
        this.y = y;
    }

    public int getX() {
        return x;
    }

    public void setX(int x) {
        this.x = x;
    }

    public int getY() {
        return y;
    }

    public void setY(int y) {
        this.y = y;
    }
    public double distance(Point anotherPoint) {
        double xCoordSq = Math.pow((x - anotherPoint.x), 2);
        double yCoordSq = Math.pow((y - anotherPoint.y), 2);

        return Math.sqrt(xCoordSq + yCoordSq);
    }

    public static void main(String[] args) {
        Point first = new Point(6, 5);
        Point second = new Point(3, 1);
        System.out.println("distance(0,0)= " + first.distance(new Point(0,0)));
        System.out.println("distance(second)= " + first.distance(second));
        System.out.println("distance(2,2)= " + first.distance(new Point(2,2)));
        Point point = new Point();
        System.out.println("distance()= " + point.distance(new Point()));

    }
}