- All Superinterfaces:
- AttributeView,- FileAttributeView
- All Known Subinterfaces:
- DosFileAttributeView,- PosixFileAttributeView
BasicFileAttributes interface.
  The file attributes are retrieved from the file system as a bulk
 operation by invoking the readAttributes method.
 This class also defines the setTimes method to update the
 file's time attributes.
 
Where dynamic access to file attributes is required, the attributes supported by this attribute view have the following names and types:
Name Type "lastModifiedTime" FileTime"lastAccessTime" FileTime"creationTime" FileTime"size" Long"isRegularFile" Boolean"isDirectory" Boolean"isSymbolicLink" Boolean"isOther" Boolean"fileKey" Object
 The getAttribute method may be
 used to read any of these attributes as if by invoking the readAttributes() method.
 
 The setAttribute method may be
 used to update the file's last modified time, last access time or create time
 attributes as if by invoking the setTimes method.
- Since:
- 1.7
- 
Method SummaryModifier and TypeMethodDescriptionname()Returns the name of the attribute view.Reads the basic file attributes as a bulk operation.voidUpdates any or all of the file's last modified time, last access time, and create time attributes.
- 
Method Details- 
nameString name()Returns the name of the attribute view. Attribute views of this type have the name"basic".- Specified by:
- namein interface- AttributeView
- Returns:
- the name of the attribute view
 
- 
readAttributesReads the basic file attributes as a bulk operation.It is implementation specific if all file attributes are read as an atomic operation with respect to other file system operations. - Returns:
- the file attributes
- Throws:
- IOException- if an I/O error occurs
- SecurityException- In the case of the default provider, a security manager is installed, its- checkReadmethod is invoked to check read access to the file
 
- 
setTimesvoid setTimes(FileTime lastModifiedTime, FileTime lastAccessTime, FileTime createTime) throws IOException Updates any or all of the file's last modified time, last access time, and create time attributes.This method updates the file's timestamp attributes. The values are converted to the epoch and precision supported by the file system. Converting from finer to coarser granularities results in precision loss. The behavior of this method when attempting to set a timestamp that is not supported or to a value that is outside the range supported by the underlying file store is not defined. It may or not fail by throwing an IOException.If any of the lastModifiedTime,lastAccessTime, orcreateTimeparameters has the valuenullthen the corresponding timestamp is not changed. An implementation may require to read the existing values of the file attributes when only some, but not all, of the timestamp attributes are updated. Consequently, this method may not be an atomic operation with respect to other file system operations. Reading and re-writing existing values may also result in precision loss. If all of thelastModifiedTime,lastAccessTimeandcreateTimeparameters arenullthen this method has no effect.Usage Example: Suppose we want to change a file's last access time. Path path = ... FileTime time = ... Files.getFileAttributeView(path, BasicFileAttributeView.class).setTimes(null, time, null);- Parameters:
- lastModifiedTime- the new last modified time, or- nullto not change the value
- lastAccessTime- the last access time, or- nullto not change the value
- createTime- the file's create time, or- nullto not change the value
- Throws:
- IOException- if an I/O error occurs
- SecurityException- In the case of the default provider, a security manager is installed, its- checkWritemethod is invoked to check write access to the file
- See Also:
 
 
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