Java : FileStore (Storage) con ejemplos
FileStore (Java SE 22 & JDK 22) en Java con ejemplos.
Encontrará muestras de código para la mayoría de los métodos FileStore.
Nota :
- Este artículo puede utilizar software de traducción para su comodidad. Consulte también la versión original en inglés.
Summary
The code examples on this page are run on Windows.
final var path = Path.of("D:");
System.out.println(path); // D:
final var store = Files.getFileStore(path);
System.out.println(store.type()); // NTFS
// --- PowerShell ---
//PS D:\> Get-PSDrive D
//
//Name Used (GB) Free (GB) Provider Root ...
//---- --------- --------- -------- ---- ...
//D 1597.26 265.63 FileSystem D:\ ...
final var total = store.getTotalSpace();
System.out.printf("%d GB%n", total / (1024 * 1024 * 1024)); // 1862 GB
final var free = store.getUnallocatedSpace();
System.out.printf("%d GB%n", free / (1024 * 1024 * 1024)); // 265 GB
final var used = total - free;
System.out.printf("%d GB%n", used / (1024 * 1024 * 1024)); // 1597 GB
Constructors
FileStore ()
protected. I think it's rare to create a subclass of this class. Therefore, the code example is omitted.
Methods
abstract Object getAttribute (String attribute)
final var path = Path.of("D:");
System.out.println(path); // D:
final var store = Files.getFileStore(path);
System.out.println(store.type()); // NTFS
System.out.println(store.getAttribute("volume:isCdrom")); // false
final var path = Path.of("F:");
System.out.println(path); // F:
//PS D:\> Get-Volume F
//
//DriveLetter FriendlyName FileSystemType DriveType ...
//----------- ------------ -------------- --------- ...
//F DVD_ROM Unknown CD-ROM ...
final var store = Files.getFileStore(path);
System.out.println(store.type()); // UDF
System.out.println(store.getAttribute("volume:isCdrom")); // true
long getBlockSize ()
final var path = Path.of("D:");
System.out.println(path); // D:
final var store = Files.getFileStore(path);
System.out.println(store.getBlockSize()); // 512
abstract <V extends FileStoreAttributeView> V getFileStoreAttributeView (Class<V> type)
final var path = Path.of("D:");
System.out.println(path); // D:
final var store = Files.getFileStore(path);
final var view = store.getFileStoreAttributeView(FileStoreAttributeView.class);
System.out.println(view); // null
abstract long getTotalSpace ()
final var path = Path.of("D:");
System.out.println(path); // D:
final var store = Files.getFileStore(path);
System.out.println(store.type()); // NTFS
// --- PowerShell ---
//PS D:\> Get-PSDrive D
//
//Name Used (GB) Free (GB) Provider Root ...
//---- --------- --------- -------- ---- ...
//D 1597.26 265.63 FileSystem D:\ ...
System.out.println(store.getTotalSpace()); // 2000263573504
System.out.println(store.getUnallocatedSpace()); // 285218787328
System.out.println(store.getUsableSpace()); // 285218787328
final var path = Path.of("F:");
System.out.println(path); // F:
final var store = Files.getFileStore(path);
System.out.println(store.type()); // UDF
// --- PowerShell ---
//PS D:\> Get-PSDrive F
//
//Name Used (GB) Free (GB) Provider Root ...
//---- --------- --------- -------- ---- ...
//F 0.05 0.00 FileSystem F:\ ...
System.out.println(store.getTotalSpace()); // 51329024
System.out.println(store.getUnallocatedSpace()); // 0
System.out.println(store.getUsableSpace()); // 0
abstract long getUnallocatedSpace ()
final var path = Path.of("D:");
System.out.println(path); // D:
final var store = Files.getFileStore(path);
System.out.println(store.type()); // NTFS
// --- PowerShell ---
//PS D:\> Get-PSDrive D
//
//Name Used (GB) Free (GB) Provider Root ...
//---- --------- --------- -------- ---- ...
//D 1597.26 265.63 FileSystem D:\ ...
System.out.println(store.getTotalSpace()); // 2000263573504
System.out.println(store.getUnallocatedSpace()); // 285218787328
System.out.println(store.getUsableSpace()); // 285218787328
final var path = Path.of("F:");
System.out.println(path); // F:
final var store = Files.getFileStore(path);
System.out.println(store.type()); // UDF
// --- PowerShell ---
//PS D:\> Get-PSDrive F
//
//Name Used (GB) Free (GB) Provider Root ...
//---- --------- --------- -------- ---- ...
//F 0.05 0.00 FileSystem F:\ ...
System.out.println(store.getTotalSpace()); // 51329024
System.out.println(store.getUnallocatedSpace()); // 0
System.out.println(store.getUsableSpace()); // 0
abstract long getUsableSpace ()
final var path = Path.of("D:");
System.out.println(path); // D:
final var store = Files.getFileStore(path);
System.out.println(store.type()); // NTFS
// --- PowerShell ---
//PS D:\> Get-PSDrive D
//
//Name Used (GB) Free (GB) Provider Root ...
//---- --------- --------- -------- ---- ...
//D 1597.26 265.63 FileSystem D:\ ...
System.out.println(store.getTotalSpace()); // 2000263573504
System.out.println(store.getUnallocatedSpace()); // 285218787328
System.out.println(store.getUsableSpace()); // 285218787328
final var path = Path.of("F:");
System.out.println(path); // F:
final var store = Files.getFileStore(path);
System.out.println(store.type()); // UDF
// --- PowerShell ---
//PS D:\> Get-PSDrive F
//
//Name Used (GB) Free (GB) Provider Root ...
//---- --------- --------- -------- ---- ...
//F 0.05 0.00 FileSystem F:\ ...
System.out.println(store.getTotalSpace()); // 51329024
System.out.println(store.getUnallocatedSpace()); // 0
System.out.println(store.getUsableSpace()); // 0
abstract boolean isReadOnly ()
final var path = Path.of("D:");
System.out.println(path); // D:
final var store = Files.getFileStore(path);
System.out.println(store.type()); // NTFS
System.out.println(store.isReadOnly()); // false
final var path = Path.of("F:");
System.out.println(path); // F:
//PS D:\> Get-Volume F
//
//DriveLetter FriendlyName FileSystemType DriveType ...
//----------- ------------ -------------- --------- ...
//F DVD_ROM Unknown CD-ROM ...
final var store = Files.getFileStore(path);
System.out.println(store.type()); // UDF
System.out.println(store.isReadOnly()); // true
abstract String name ()
// --- PowerShell ---
//PS D:\> Get-Volume W
//
//DriveLetter FriendlyName FileSystemType ...
//----------- ------------ -------------- ...
//W Work NTFS ...
final var path = Path.of("W:");
System.out.println(path); // W:
final var store = Files.getFileStore(path);
System.out.println(store.name()); // Work
System.out.println(store.type()); // NTFS
abstract boolean supportsFileAttributeView (Class<? extends FileAttributeView> type)
final var path = Path.of("D:");
System.out.println(path); // D:
final var store = Files.getFileStore(path);
System.out.println(store.type()); // NTFS
final var dos = store.supportsFileAttributeView(DosFileAttributeView.class);
System.out.println(dos); // true
final var posix = store.supportsFileAttributeView(PosixFileAttributeView.class);
System.out.println(posix); // false
abstract boolean supportsFileAttributeView (String name)
final var path = Path.of("D:");
System.out.println(path); // D:
final var store = Files.getFileStore(path);
System.out.println(store.type()); // NTFS
final var dos = store.supportsFileAttributeView("dos");
System.out.println(dos); // true
final var posix = store.supportsFileAttributeView("posix");
System.out.println(posix); // false
abstract String type ()
final var path = Path.of("D:");
System.out.println(path); // D:
final var store = Files.getFileStore(path);
System.out.println(store.type()); // NTFS
final var path = Path.of("F:");
System.out.println(path); // F:
//PS D:\> Get-Volume F
//
//DriveLetter FriendlyName FileSystemType DriveType ...
//----------- ------------ -------------- --------- ...
//F DVD_ROM Unknown CD-ROM ...
final var store = Files.getFileStore(path);
System.out.println(store.type()); // UDF