Java Learning at a glance--file class file processing

Java Learning at a glance--file class file processing

File Class (Java.io.File)

constructor function:

File (String Path)

File (String parent,string Child)

File (file parent,string child)

To create a file:

Boolean createnewfile ();

To create a folder:

Boolean mkdir (); Used to create a layer of undefined folders Boolean mkdirs ();

Used to create multi-level undefined folders, equivalent to multiple mkdir ()

Delete files/folders:

Boolean delete ();

Note: If a folder is not empty, you cannot use. Delete () to delete the folder

Rename:

Boolean rename (File FILE0); [File.rename (file FILE0);]

Note: If the same path is renamed, the different paths are renamed plus cut

Judging function:

Boolean canRead (); Whether it is readable

Boolean canWrite (); Whether it can be written

Boolean Ishidden (); Whether to hide

Boolean isdirectory; Whether it is a folder

Boolean isfile (); Whether it is a file

Boolean exists (); Whether there is

Get Features:

String GetAbsolutePath (); Absolute path

String GetPath (); Relative path

String GetName (); Get file name

Long length (); Get length size

Long LastModified (); Gets the millisecond value of the last modified time

Get a list of files:

String[] List (); Gets an array of all file or folder names (strings) in the specified directory

File[] ListFile (); Gets an array of all files or folders in the specified directory

Java Learning at a glance--file class file processing