How to get a file 's extension from the complete path string?

如何从完整的路径中获取文件扩展名？

youdao

How to get a file's extension from the complete path string?

如何从完整的路径中获取文件扩展名？

youdao

How to get a file's extension from the complete path string?

如何从完整的路径中获取文件扩展名？

youdao