获取java中文件夹中的文件数

import java.io.File;

public class FileCount {
    public static int getFileCount(String folderPath) {
        File folder = new File(folderPath);
        if (!folder.isDirectory()) {
            throw new IllegalArgumentException("指定路径不是文件夹");
        }
        File[] files = folder.listFiles();
        int count = 0;
        if (files != null) {
            for (File file : files) {
                if (file.isDirectory()) {
                    count += getFileCount(file.getAbsolutePath());
                } else {
                    count++;
                }
            }
        }
        return count;
    }

    public static void main(String[] args) {
        String folderPath = "路径/文件夹";
        int fileCount = getFileCount(folderPath);
        System.out.println("文件夹中的文件数：" + fileCount);
    }
}