Different methods for arbitrary n-dimensional points in Java

Main.java

package practice.eecs1021;

class Point {
    private double[] coord;
    Point (double... coord) { this.coord = coord; }

    // get value from index
    private double getValue(int index) { return coord[index]; }

    // get size of array
    private int getSize() { return coord.length; }

    // get distance from coordNew
    double getDistanceFrom(Point coordNew) {
        double sum = 0;
        if (coord.length != coordNew.getSize()) return 0;
        else {
            for (int i = 0; i < coord.length; i++) {
                double diff = Math.pow(coord[i] - coordNew.getValue(i), 2);
                sum += diff;
            }
            return Math.sqrt(sum);
        }
    }

    // get hypoteneuse
    double getHyp() {
        double sum = 0;
        for (double aCoord : coord) {
           sum += Math.pow(aCoord, 2);
        }
        return Math.sqrt(sum);
    }
}

public class Main {
    public static void main(String[] args) {
        Point start = new Point(1, 2, 3);
        Point end = new Point(0, 0, 1);
        System.out.println(start.getDistanceFrom(end));
        System.out.println(start.getHyp());
    }
}