The FileSystemFileEntry interface of the File and Directory Entries API represents a file in a file system. It offers properties describing the file's attributes, as well as the file() method, which creates a File object that can be used to read the file.
Inherits the properties of its parent interface, FileSystemEntry, but has no properties unique to this interface.
createWriter() Returns a FileWriter object which can be used to write data into the file represented by the directory entry.
file()Creates a new File object which can be used to read the file.