A small example of java using recursion to obtain all file paths in a directory

private List<String> ergodic(File file,List<String> resultFileName){
        File[] files = file.listFiles();
        if(files==null)return resultFileName;// 判断目录下是不是空的
        for (File f : files) {
            if(f.isDirectory()){// 判断是否文件夹
                resultFileName.add(f.getPath());
                ergodic(f,resultFileName);// 调用自身,查找子目录
            }else
                resultFileName.add(f.getPath());
        }
        return resultFileName;
    }

When calling, use: return ergodic(new File(forderPath), resultList);
The returned result is all the file paths in the directory including subdirectories, including subdirectories of subdirectories...

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