File.list() vs File.listFiles()

import java.io.File;

public class FileExample {
    public static void main(String[] args) {
        File directory = new File("path/to/directory");

        // 使用 File.list()
        String[] fileNames = directory.list();
        if (fileNames != null) {
            for (String fileName : fileNames) {
                System.out.println(fileName);
            }
        } else {
            System.out.println("Directory does not exist or an error occurred.");
        }

        // 使用 File.listFiles()
        File[] files = directory.listFiles();
        if (files != null) {
            for (File file : files) {
                System.out.println(file.getName());
                // 可以进行更多操作，例如检查文件类型
                if (file.isFile()) {
                    System.out.println("It's a file.");
                } else if (file.isDirectory()) {
                    System.out.println("It's a directory.");
                }
            }
        } else {
            System.out.println("Directory does not exist or an error occurred.");
        }
    }
}