package com.jilongda.applet.utils;
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public class DistanceCalculator {
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public static void main(String[] args) {
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String coord1 = "40.7128";
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String coord2 = "-74.0060";
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String coord3 = "34.0522";
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String coord4 = "-118.2437";
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double distance = calculateDistance(coord1, coord2, coord3, coord4);
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System.out.println("两个坐标点的距离为: " + distance + " km");
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}
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public static double calculateDistance(String lat1, String lon1, String lat2, String lon2) {
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double lat1Double = Double.parseDouble(lat1);
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double lon1Double = Double.parseDouble(lon1);
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double lat2Double = Double.parseDouble(lat2);
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double lon2Double = Double.parseDouble(lon2);
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int R = 6371; // 地球半径，单位：km
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double latDistance = Math.toRadians(lat2Double - lat1Double);
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double lonDistance = Math.toRadians(lon2Double - lon1Double);
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double a = Math.sin(latDistance / 2) * Math.sin(latDistance / 2)
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+ Math.cos(Math.toRadians(lat1Double)) * Math.cos(Math.toRadians(lat2Double))
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* Math.sin(lonDistance / 2) * Math.sin(lonDistance / 2);
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double c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));
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return R * c;
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}
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}
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