是否从Java URL (文件:和http/https协议)提取文件名？

import java.net.URL;
import java.net.MalformedURLException;

public class FileNameExtractor {
    public static void main(String[] args) {
        String[] urls = {
            "file:///path/to/local/file.txt",
            "http://example.com/path/to/remote/file.jpg",
            "https://example.org/path/to/another/remote/document.pdf"
        };

        for (String urlString : urls) {
            try {
                URL url = new URL(urlString);
                String fileName = getFileNameFromURL(url);
                System.out.println("URL: " + urlString + " -> File Name: " + fileName);
            } catch (MalformedURLException e) {
                System.err.println("Invalid URL: " + urlString);
            }
        }
    }

    private static String getFileNameFromURL(URL url) {
        String path = url.getPath();
        int lastIndex = path.lastIndexOf('/');
        if (lastIndex == -1) {
            return path;
        } else {
            return path.substring(lastIndex + 1);
        }
    }
}