程序输出结果不对啊

import java.util.Scanner;

public class FindNearestPoints{

	public static void main(String[] args){

		Scanner input = new Scanner(System.in);

		System.out.print("Enter the numbers of points: ");

		int numberOfPoints = input.nextInt();



		double[][] points = new double[numberOfPoints][2];

		System.out.print("Enter " + numberOfPoints + " points: ");

		for(int i = 0; i < points.length; i++){

			points[i][0] = input.nextDouble();

			points[i][1] = input.nextDouble();

		}



		int p1 = 0, p2 = 0;

		double shortestDistance = distance(points[p1][0], points[p1][1], points[p2][0], points[p2][1]);



		for(int i = 0; i < points.length; i++){

			for(int j = i + 1; j < points.length; j++){

				double distance = distance(points[i][0], points[i][1], points[j][0], points[j][1]);

				if(shortestDistance > distance){

					p1 = i;

					p2 = j;

					shortestDistance = distance;

				}

			}

		}



		System.out.println("The closest two points are " 

			+ "(" + points[p1][0] + "," + points[p1][1] + ") and (" + points[p2][0] + "," + points[p2][1] + ")");

	}



	public static double distance(double x1, double y1, double x2, double y2){

		return Math.sqrt((x2 - x1) * (x2 - x1) + (y2 - y1) * (y2 - y1));

	}

}