Java javax.swing.filechooser Class FileSystemView（JDK8）

Constructor Detail

• FileSystemView

  public FileSystemView()

Method Detail

• getFileSystemView

  public static FileSystemView getFileSystemView()

• isRoot

  public boolean isRoot(File f)

  Determines if the given file is a root in the navigable tree(s). Examples: Windows 98 has one root, the Desktop folder. DOS has one root per drive letter, C:\, D:\, etc. Unix has one root, the "/" directory. The default implementation gets information from the ShellFolder class.

  Parameters:

  f - a File object representing a directory

  Returns:

  true if f is a root in the navigable tree.

  See Also:

  isFileSystemRoot(java.io.File)

• isTraversable

  public Boolean isTraversable(File f)

  Returns true if the file (directory) can be visited. Returns false if the directory cannot be traversed.

  Parameters:

  f - the File

  Returns:

  true if the file/directory can be traversed, otherwise false

  Since:

  1.4

  See Also:

  JFileChooser.isTraversable(java.io.File), FileView.isTraversable(java.io.File)

• getSystemDisplayName

  public String getSystemDisplayName(File f)

  Name of a file, directory, or folder as it would be displayed in a system file browser. Example from Windows: the "M:\" directory displays as "CD-ROM (M:)" The default implementation gets information from the ShellFolder class.

  Parameters:

  f - a File object

  Returns:

  the file name as it would be displayed by a native file chooser

  Since:

  1.4

  See Also:

  JFileChooser.getName(java.io.File)

• getSystemTypeDescription

  public String getSystemTypeDescription(File f)

  Type description for a file, directory, or folder as it would be displayed in a system file browser. Example from Windows: the "Desktop" folder is described as "Desktop". Override for platforms with native ShellFolder implementations.

  Parameters:

  f - a File object

  Returns:

  the file type description as it would be displayed by a native file chooser or null if no native information is available.

  Since:

  1.4

  See Also:

  JFileChooser.getTypeDescription(java.io.File)

• getSystemIcon

  public Icon getSystemIcon(File f)

  Icon for a file, directory, or folder as it would be displayed in a system file browser. Example from Windows: the "M:\" directory displays a CD-ROM icon. The default implementation gets information from the ShellFolder class.

  Parameters:

  f - a File object

  Returns:

  an icon as it would be displayed by a native file chooser

  Since:

  1.4

  See Also:

  JFileChooser.getIcon(java.io.File)

• isParent

  public boolean isParent(File folder,
                          File file)

  On Windows, a file can appear in multiple folders, other than its parent directory in the filesystem. Folder could for example be the "Desktop" folder which is not the same as file.getParentFile().

  Parameters:

  folder - a File object representing a directory or special folder

  file - a File object

  Returns:

  true if folder is a directory or special folder and contains file.

  Since:

  1.4

• getChild

  public File getChild(File parent,
                       String fileName)

  Parameters:

  parent - a File object representing a directory or special folder

  fileName - a name of a file or folder which exists in parent

  Returns:

  a File object. This is normally constructed with new File(parent, fileName) except when parent and child are both special folders, in which case the File is a wrapper containing a ShellFolder object.

  Since:

  1.4

• isFileSystem

  public boolean isFileSystem(File f)

  Checks if f represents a real directory or file as opposed to a special folder such as "Desktop". Used by UI classes to decide if a folder is selectable when doing directory choosing.

  Parameters:

  f - a File object

  Returns:

  true if f is a real file or directory.

  Since:

  1.4

• createNewFolder

  public abstract File createNewFolder(File containingDir)
                                throws IOException

  Creates a new folder with a default folder name.

  Throws:

  IOException

• isHiddenFile

  public boolean isHiddenFile(File f)

  Returns whether a file is hidden or not.

• isFileSystemRoot

  public boolean isFileSystemRoot(File dir)

  Is dir the root of a tree in the file system, such as a drive or partition. Example: Returns true for "C:\" on Windows 98.

  Parameters:

  dir - a File object representing a directory

  Returns:

  true if f is a root of a filesystem

  Since:

  1.4

  See Also:

  isRoot(java.io.File)

• isDrive

  public boolean isDrive(File dir)

  Used by UI classes to decide whether to display a special icon for drives or partitions, e.g. a "hard disk" icon. The default implementation has no way of knowing, so always returns false.

  Parameters:

  dir - a directory

  Returns:

  false always

  Since:

  1.4

• isFloppyDrive

  public boolean isFloppyDrive(File dir)

  Used by UI classes to decide whether to display a special icon for a floppy disk. Implies isDrive(dir). The default implementation has no way of knowing, so always returns false.

  Parameters:

  dir - a directory

  Returns:

  false always

  Since:

  1.4

• isComputerNode

  public boolean isComputerNode(File dir)

  Used by UI classes to decide whether to display a special icon for a computer node, e.g. "My Computer" or a network server. The default implementation has no way of knowing, so always returns false.

  Parameters:

  dir - a directory

  Returns:

  false always

  Since:

  1.4

• getRoots

  public File[] getRoots()

  Returns all root partitions on this system. For example, on Windows, this would be the "Desktop" folder, while on DOS this would be the A: through Z: drives.

• getHomeDirectory

  public File getHomeDirectory()

• getDefaultDirectory

  public File getDefaultDirectory()

  Return the user's default starting directory for the file chooser.

  Returns:

  a File object representing the default starting folder

  Since:

  1.4

• createFileObject

  public File createFileObject(File dir,
                               String filename)

  Returns a File object constructed in dir from the given filename.

• createFileObject

  public File createFileObject(String path)

  Returns a File object constructed from the given path string.

• getFiles

  public File[] getFiles(File dir,
                         boolean useFileHiding)

  Gets the list of shown (i.e. not hidden) files.

• getParentDirectory

  public File getParentDirectory(File dir)

  Returns the parent directory of dir.

  Parameters:

  dir - the File being queried

  Returns:

  the parent directory of dir, or null if dir is null

• createFileSystemRoot

  protected File createFileSystemRoot(File f)

  Creates a new File object for f with correct behavior for a file system root directory.

  Parameters:

  f - a File object representing a file system root directory, for example "/" on Unix or "C:\" on Windows.

  Returns:

  a new File object

  Since:

  1.4