Class File

java.lang.Object

java.io.File

File

All Implemented Interfaces:

Serializable, Comparable<File>, Mutable

public final class File
extends File
implements Mutable

A reference to an existing file

See Also:

• Serialized Form

Field Summary

Fields inherited from class java.io.File

pathSeparator, pathSeparatorChar, separator, separatorChar

Fields inherited from interface org.copalis.jam.memo.Mutable

CHANGED

Constructor Summary

Constructors

Constructor	Description
File(String pathname)	Creates a reference to a file specified by a path string
File(URI uri)	Creates a reference to a file specified by a URI
File(Path path)	Creates a reference to a file specified by a Path object

Method Summary

Modifier and Type	Method	Description
String	digest(String algorithm)	Generates a digest of the file's contents
boolean	equals(Object other)
boolean	modified()	Checks if the resource has been modified since this reference was created

Methods inherited from class java.io.File

canExecute, canRead, canWrite, compareTo, createNewFile, createTempFile, createTempFile, delete, deleteOnExit, exists, getAbsoluteFile, getAbsolutePath, getCanonicalFile, getCanonicalPath, getFreeSpace, getName, getParent, getParentFile, getPath, getTotalSpace, getUsableSpace, hashCode, isAbsolute, isDirectory, isFile, isHidden, lastModified, length, list, list, listFiles, listFiles, listFiles, listRoots, mkdir, mkdirs, renameTo, setExecutable, setExecutable, setLastModified, setReadable, setReadable, setReadOnly, setWritable, setWritable, toPath, toString, toURI, toURL

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Details

File

public File(URI uri)

Creates a reference to a file specified by a URI

Parameters:

uri - the file's URI

File

public File(String pathname)

Creates a reference to a file specified by a path string

Parameters:

pathname - the path string

File

public File(Path path)

Creates a reference to a file specified by a Path object

Parameters:

path - the path to the file

Method Details

digest

public String digest(String algorithm)

Generates a digest of the file's contents

Parameters:

algorithm - the message digest algorithm

Returns:

a hexadecimal string representation of the file's message digest

See Also:

• MessageDigest.getInstance(String)

modified

public boolean modified()

Description copied from interface: Mutable

Checks if the resource has been modified since this reference was created

Specified by:

modified in interface Mutable

Returns:

true if the resource has been modified

equals

public boolean equals(Object other)

Overrides:

equals in class File