你作为Java后端工程师完成以下代码快递有经纬度的计算

package com.example.demo;

import java.util.Scanner;

public class Main { public static void main(String[] args) { Scanner scanner = new Scanner(System.in); System.out.print("请输入快递起点经度："); double startLongitude = scanner.nextDouble(); System.out.print("请输入快递起点纬度："); double startLatitude = scanner.nextDouble(); System.out.print("请输入快递终点经度："); double endLongitude = scanner.nextDouble(); System.out.print("请输入快递终点纬度："); double endLatitude = scanner.nextDouble(); double distance = getDistance(startLongitude, startLatitude, endLongitude, endLatitude); System.out.println("两点间距离为：" + distance + "米"); }

public static double getDistance(double startLongitude, double startLatitude, double endLongitude, double endLatitude) {
    double earthRadius = 6371000;// 地球半径，单位为米
    double radStartLongitude = Math.toRadians(startLongitude);
    double radEndLongitude = Math.toRadians(endLongitude);
    double radStartLatitude = Math.toRadians(startLatitude);
    double radEndLatitude = Math.toRadians(endLatitude);
    double a = Math.pow(Math.sin((radStartLatitude - radEndLatitude) / 2), 2) + Math.cos(radStartLatitude) * Math.cos(radEndLatitude) * Math.pow(Math.sin((radStartLongitude - radEndLongitude) / 2), 2);
    double c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));
    double distance = earthRadius * c;
    return distance;
}

}