Overrides java.lang.Object.equals.

Doc from java.lang.Object.equals.

Indicates whether some other object is "equal to" this one.

The equals method implements an equivalence relation on non-null object references:

• It is reflexive: for any non-null reference value x, x.equals(x) should return true.
• It is symmetric: for any non-null reference values x and y, x.equals(y) should return true if and only if y.equals(x) returns true.
• It is transitive: for any non-null reference values x, y, and z, if x.equals(y) returns true and y.equals(z) returns true, then x.equals(z) should return true.
• It is consistent: for any non-null reference values x and y, multiple invocations of x.equals(y) consistently return true or consistently return false, provided no information used in equals comparisons on the objects is modified.
• For any non-null reference value x, x.equals(null) should return false.

An equivalence relation partitions the elements it operates on into equivalence classes; all the members of an equivalence class are equal to each other. Members of an equivalence class are substitutable for each other, at least for some purposes.

Annotations

@Override

Implements abstract java.nio.file.FileStore.getAttribute.

Doc from java.nio.file.FileStore.getAttribute.

Reads the value of a file store attribute.

The attribute parameter identifies the attribute to be read and takes the form:

view-name:attribute-name

view-name is the name of a AttributeView that identifies a set of file attributes. attribute-name is the name of the attribute.

Usage Example: Suppose we want to know if ZFS compression is enabled (assuming the "zfs" view is supported):

boolean compression = (Boolean)fs.getAttribute("zfs:compression");

Annotations

@Override

Exceptions

IOException:

if an I/O error occurs

Overrides java.nio.file.FileStore.getBlockSize.

Doc from java.nio.file.FileStore.getBlockSize.

Returns the number of bytes per block in this file store.

File storage is typically organized into discrete sequences of bytes called blocks. A block is the smallest storage unit of a file store. Every read and write operation is performed on a multiple of blocks.

Annotations

@Override

Exceptions

IOException:

if an I/O error occurs

Implements abstract java.nio.file.FileStore.getFileStoreAttributeView.

Doc from java.nio.file.FileStore.getFileStoreAttributeView.

Returns a FileStoreAttributeView of the given type.

This method is intended to be used where the file store attribute view defines type-safe methods to read or update the file store attributes. The type parameter is the type of the attribute view required and the method returns an instance of that type if supported.

Annotations

@Override

Implements abstract java.nio.file.FileStore.getTotalSpace.

Doc from java.nio.file.FileStore.getTotalSpace.

Returns the size, in bytes, of the file store. If the total number of bytes in the file store is greater than Long#MAX_VALUE, then Long.MAX_VALUE will be returned.

Annotations

@Override

Exceptions

IOException:

if an I/O error occurs

Implements abstract java.nio.file.FileStore.getUnallocatedSpace.

Doc from java.nio.file.FileStore.getUnallocatedSpace.

Returns the number of unallocated bytes in the file store. If the number of unallocated bytes is greater than Long#MAX_VALUE, then Long.MAX_VALUE will be returned.

The returned number of unallocated bytes is a hint, but not a guarantee, that it is possible to use most or any of these bytes. The number of unallocated bytes is most likely to be accurate immediately after this method returns. It is likely to be made inaccurate by any external I/O operations including those made on the system outside of this virtual machine.

Annotations

@Override

Exceptions

IOException:

if an I/O error occurs

Implements abstract java.nio.file.FileStore.getUsableSpace.

Doc from java.nio.file.FileStore.getUsableSpace.

Returns the number of bytes available to this Java virtual machine on the file store. If the number of bytes available is greater than Long#MAX_VALUE, then Long.MAX_VALUE will be returned.

The returned number of available bytes is a hint, but not a guarantee, that it is possible to use most or any of these bytes. The number of usable bytes is most likely to be accurate immediately after this method returns. It is likely to be made inaccurate by any external I/O operations including those made on the system outside of this Java virtual machine.

Annotations

@Override

Exceptions

IOException:

if an I/O error occurs

Overrides java.lang.Object.hashCode.

Doc from java.lang.Object.hashCode.

Returns a hash code value for this object. This method is supported for the benefit of hash tables such as those provided by java.util.HashMap.

The general contract of hashCode is:

• Whenever it is invoked on the same object more than once during an execution of a Java application, the hashCode method must consistently return the same integer, provided no information used in equals comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application.
• If two objects are equal according to the equals method, then calling the hashCode method on each of the two objects must produce the same integer result.
• It is not required that if two objects are unequal according to the equals method, then calling the hashCode method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables.

Annotations

@Override

Implements abstract java.nio.file.FileStore.isReadOnly.

Doc from java.nio.file.FileStore.isReadOnly.

Tells whether this file store is read-only. A file store is read-only if it does not support write operations or other changes to files. Any attempt to create a file, open an existing file for writing etc. causes an IOException to be thrown.

Annotations

@Override

Implements abstract java.nio.file.FileStore.name.

Doc from java.nio.file.FileStore.name.

Returns the name of this file store. The format of the name is highly implementation specific. It will typically be the name of the storage pool or volume.

The string returned by this method may differ from the string returned by the toString method.

Annotations

@Override

Implements abstract java.nio.file.FileStore.supportsFileAttributeView.

Doc from java.nio.file.FileStore.supportsFileAttributeView.

Tells whether or not this file store supports the file attributes identified by the given file attribute view.

Invoking this method to test if the file store supports BasicFileAttributeView will always return true. In the case of the default provider, this method cannot guarantee to give the correct result when the file store is not a local storage device. The reasons for this are implementation specific and therefore unspecified.

Annotations

@Override

Implements abstract java.nio.file.FileStore.supportsFileAttributeView.

Doc from java.nio.file.FileStore.supportsFileAttributeView.

Tells whether or not this file store supports the file attributes identified by the given file attribute view.

Invoking this method to test if the file store supports BasicFileAttributeView, identified by the name "basic" will always return true. In the case of the default provider, this method cannot guarantee to give the correct result when the file store is not a local storage device. The reasons for this are implementation specific and therefore unspecified.

Annotations

@Override

Overrides java.lang.Object.toString.

Doc from java.lang.Object.toString.

Returns a string representation of the object. Satisfying this method's contract implies a non-null result must be returned.

Annotations

@Override

Implements abstract java.nio.file.FileStore.type.

Doc from java.nio.file.FileStore.type.

Returns the type of this file store. The format of the string returned by this method is highly implementation specific. It may indicate, for example, the format used or if the file store is local or remote.

Annotations

@Override