检查文件读取，处理文件处理异常。阅读您的文件包然后写出其具体功能(至少要20个字)。-Check the document to read, to deal with document processing anomalies. Read your paper bag and then write their specific functions (at least 20 words).

程序是异常处理的，是程序能够正常运行 避免出错-Program is exception handling is the normal operating procedures to avoid making mistakes