Files Utility Class

Question 1

Creates a file given by the dirPath, and sets the attributes given by dirAttributes. Creates intermediate directories if they do not exist.

Answer 1

Path createDirectories(Path dir, FileAttribute> attrs)

Question 2

Creates a file given by the dirPath, and sets the attributes given by dirAttributes. Does not create intermediate directories if they do not exist

Answer 2

Path createDirectory(Path dir, FileAttribute> attrs)

Question 3

Creates a temporary file with the given prefix, suffix, and attributes in the directory given by dir.

Answer 3

Path createTempFile(Path dir, String prefix, String suffix, FileAttribute> … attrs)

Question 4

Creates a temporary directory with the given prefix, directory attributes in the path specified by dir.

Answer 4

Path createTempDirectory(Path dir, String prefix, FileAttribute> … attrs)

Question 5

Copy the file from source to target. CopyOption could be REPLACE_EXISTING, COPY_ATTRIBUTES, OR NOFOLLOW_LINKS. Can throw FileAlreadyExistsException.

Answer 5

Path copy(Path source, Path target, CopyOption… options)

Question 6

Similar to the coy operation except that the source file is removed. If the source and target are in the same directory, it is effectively file rename.

Answer 6

Path move(Path source, Path target, CopyOption… options)

Question 7

Checks if the two Path objects locate the same file or not.

Answer 7

boolean isSameFile(Path path, Path path2)

Question 8

Checks if a file/directory exists in the given path; can specify LinkOption.NOFOLLOW_LINKS to not follow symbolic links.

Answer 8

boolean exists(Path path, LinkOption … option)

Question 9

Returns true if the file represented by path is a regular file.

Answer 9

Boolean isRegularFile(Path path, LinkOption …)

Question 10

Returns true if the file presented by path is a symbolic link.

Answer 10

Boolean isSymbolicLink(Path path)

Question 11

Returns true if the file represented by path is a hidden file.

Answer 11

Boolean isHidden(Path path)

Question 12

Returns the size of the file in bytes represented by the path.

Answer 12

long size(Path path)

Question 13

Gets the owner of the file.

Answer 13

UserPrincipal getOwner(Path path, LinkOption…)

Question 14

Sets the owner of the file.

Answer 14

Path setOwner(Path path, UserPrincipal owner)

Question 15

Gets the last modified time for the specified time.

Answer 15

FileTime getLastModifiedTime(Path path, LinkOption….)

Question 16

Sets the last modified time for the specified time.

Answer 16

Path setLastModifiedTime(Path path, FileTime time)

Question 17

Gets the specified attribute of the specified file.

Answer 17

Object getAttribute(Path path, String attribute, LinkOption…)

Question 18

Sets the specified attribute of the specified file.

Answer 18

Path setAttribute(Path path, String attribute, Object value, LinkOption ….)

Question 19

Returns true if directory, false if file.

Answer 19

boolean isDirectory(Path path, LinkOption….)