public final class Paths extends Object
This class consists exclusively of static methods that return a Path
by converting a path string or URI
.
public static Path get(String first, String... more)
Converts a path string, or a sequence of strings that when joined form a path string, to a Path
. If more
does not specify any elements then the value of the first
parameter is the path string to convert. If more
specifies one or more elements then each non-empty string, including first
, is considered to be a sequence of name elements (see Path
) and is joined to form a path string. The details as to how the Strings are joined is provider specific but typically they will be joined using the name-separator
as the separator. For example, if the name separator is "/
" and getPath("/foo","bar","gus")
is invoked, then the path string "/foo/bar/gus"
is converted to a Path
. A Path
representing an empty path is returned if first
is the empty string and more
does not contain any non-empty strings.
The Path
is obtained by invoking the getPath
method of the default
FileSystem
.
Note that while this method is very convenient, using it will imply an assumed reference to the default FileSystem
and limit the utility of the calling code. Hence it should not be used in library code intended for flexible reuse. A more flexible alternative is to use an existing Path
instance as an anchor, such as:
Path dir = ... Path path = dir.resolve("file");
first
- the path string or initial part of the path stringmore
- additional strings to be joined to form the path stringPath
InvalidPathException
- if the path string cannot be converted to a Path
FileSystem.getPath(java.lang.String, java.lang.String...)
public static Path get(URI uri)
Converts the given URI to a Path
object.
This method iterates over the installed
providers to locate the provider that is identified by the URI scheme
of the given URI. URI schemes are compared without regard to case. If the provider is found then its getPath
method is invoked to convert the URI.
In the case of the default provider, identified by the URI scheme "file", the given URI has a non-empty path component, and undefined query and fragment components. Whether the authority component may be present is platform specific. The returned Path
is associated with the default
file system.
The default provider provides a similar round-trip guarantee to the File
class. For a given Path
p it is guaranteed that
Paths.get(p.toUri()).equals( p.toAbsolutePath())so long as the original
Path
, the URI
, and the new Path
are all created in (possibly different invocations of) the same Java virtual machine. Whether other providers make any guarantees is provider specific and therefore unspecified.uri
- the URI to convertPath
IllegalArgumentException
- if preconditions on the uri
parameter do not hold. The format of the URI is provider specific.FileSystemNotFoundException
- The file system, identified by the URI, does not exist and cannot be created automatically, or the provider identified by the URI's scheme component is not installedSecurityException
- if a security manager is installed and it denies an unspecified permission to access the file system
© 1993–2017, Oracle and/or its affiliates. All rights reserved.
Documentation extracted from Debian's OpenJDK Development Kit package.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
Various third party code in OpenJDK is licensed under different licenses (see Debian package).
Java and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates.