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Como renomear uma pasta usando o processamento em lote no Windows? Returns: The name of the file or directory denoted by this abstract pathname, or the empty string if this pathname's name sequence is empty getParent public String getParent Returns the pathname string of this abstract pathname's parent, or null if this pathname does not name a parent directory.
The parent of an abstract pathname consists of the pathname's prefix, if any, and each name in the pathname's name sequence except for the last. If the name sequence is empty then the pathname does not name a parent directory. Returns: The pathname string of the parent directory named by this abstract pathname, or null if this pathname does not name a parent getParentFile public File getParentFile Returns the abstract pathname of this abstract pathname's parent, or null if this pathname does not name a parent directory.
Returns: The abstract pathname of the parent directory named by this abstract pathname, or null if this pathname does not name a parent Since: 1. The resulting string uses the default name-separator character to separate the names in the name sequence.
Returns: The string form of this abstract pathname isAbsolute public boolean isAbsolute Tests whether this abstract pathname is absolute.
The definition of absolute pathname is system dependent. Returns: true if this abstract pathname is absolute, false otherwise getAbsolutePath public String getAbsolutePath Returns the absolute pathname string of this abstract pathname.
If this abstract pathname is already absolute, then the pathname string is simply returned as if by the getPath method. If this abstract pathname is the empty abstract pathname then the pathname string of the current user directory, which is named by the system property user.
Otherwise this pathname is resolved in a system-dependent way. On UNIX systems, a relative pathname is made absolute by resolving it against the current user directory. On Microsoft Windows systems, a relative pathname is made absolute by resolving it against the current directory of the drive named by the pathname, if any; if not, it is resolved against the current user directory. Returns: The absolute pathname string denoting the same file or directory as this abstract pathname Throws: SecurityException - If a required system property value cannot be accessed.
Equivalent to new File this. Returns: The absolute abstract pathname denoting the same file or directory as this abstract pathname Throws: SecurityException - If a required system property value cannot be accessed.
Since: 1. A canonical pathname is both absolute and unique. The precise definition of canonical form is system-dependent. This method first converts this pathname to absolute form if necessary, as if by invoking the getAbsolutePath method, and then maps it to its unique form in a system-dependent way. This typically involves removing redundant names such as ". Every pathname that denotes an existing file or directory has a unique canonical form. Every pathname that denotes a nonexistent file or directory also has a unique canonical form.
The canonical form of the pathname of a nonexistent file or directory may be different from the canonical form of the same pathname after the file or directory is created. Similarly, the canonical form of the pathname of an existing file or directory may be different from the canonical form of the same pathname after the file or directory is deleted.
FileDescriptor method denies read access to the file Since: 1. Converts this abstract pathname into a file: URL. The exact form of the URL is system-dependent. If it can be determined that the file denoted by this abstract pathname is a directory, then the resulting URL will end with a slash. The exact form of the URI is system-dependent. If it can be determined that the file denoted by this abstract pathname is a directory, then the resulting URI will end with a slash.
For a given abstract pathname f , it is guaranteed that new File f. Due to the system-dependent nature of abstract pathnames, however, this relationship typically does not hold when a file: URI that is created in a virtual machine on one operating system is converted into an abstract pathname in a virtual machine on a different operating system.
The authority component is undefined, meaning that it is represented as null. The Path class defines the toUri method to encode the server name in the authority component of the resulting URI.
The toPath method may be used to obtain a Path representing this abstract pathname. Returns: An absolute, hierarchical URI with a scheme equal to "file" , a path representing this abstract pathname, and undefined authority, query, and fragment components Throws: SecurityException - If a required system property value cannot be accessed. Returns: true if and only if the file specified by this abstract pathname exists and can be read by the application; false otherwise Throws: SecurityException - If a security manager exists and its SecurityManager.
String method denies read access to the file canWrite public boolean canWrite Tests whether the application can modify the file denoted by this abstract pathname. Returns: true if and only if the file system actually contains a file denoted by this abstract pathname and the application is allowed to write to the file; false otherwise. String method denies write access to the file exists public boolean exists Tests whether the file or directory denoted by this abstract pathname exists.
Returns: true if and only if the file or directory denoted by this abstract pathname exists; false otherwise Throws: SecurityException - If a security manager exists and its SecurityManager. String method denies read access to the file or directory isDirectory public boolean isDirectory Tests whether the file denoted by this abstract pathname is a directory. Returns: true if and only if the file denoted by this abstract pathname exists and is a directory; false otherwise Throws: SecurityException - If a security manager exists and its SecurityManager.
String method denies read access to the file isFile public boolean isFile Tests whether the file denoted by this abstract pathname is a normal file. A file is normal if it is not a directory and, in addition, satisfies other system-dependent criteria. Any non-directory file created by a Java application is guaranteed to be a normal file. Returns: true if and only if the file denoted by this abstract pathname exists and is a normal file; false otherwise Throws: SecurityException - If a security manager exists and its SecurityManager.
String method denies read access to the file isHidden public boolean isHidden Tests whether the file named by this abstract pathname is a hidden file. The exact definition of hidden is system-dependent. On UNIX systems, a file is considered to be hidden if its name begins with a period character '. On Microsoft Windows systems, a file is considered to be hidden if it has been marked as such in the filesystem. Returns: true if and only if the file denoted by this abstract pathname is hidden according to the conventions of the underlying platform Throws: SecurityException - If a security manager exists and its SecurityManager.
String method denies read access to the file Since: 1. String method denies read access to the file length public long length Returns the length of the file denoted by this abstract pathname. The return value is unspecified if this pathname denotes a directory. Returns: The length, in bytes, of the file denoted by this abstract pathname, or 0L if the file does not exist. Some operating systems may return 0L for pathnames denoting system-dependent entities such as devices or pipes.
String method denies read access to the file createNewFile public boolean createNewFile throws IOException Atomically creates a new, empty file named by this abstract pathname if and only if a file with this name does not yet exist. The check for the existence of the file and the creation of the file if it does not exist are a single operation that is atomic with respect to all other filesystem activities that might affect the file.
Note: this method should not be used for file-locking, as the resulting protocol cannot be made to work reliably. The FileLock facility should be used instead. String method denies write access to the file Since: 1. If this pathname denotes a directory, then the directory must be empty in order to be deleted. Note that the Files class defines the delete method to throw an IOException when a file cannot be deleted. This is useful for error reporting and to diagnose why a file cannot be deleted.
Returns: true if and only if the file or directory is successfully deleted; false otherwise Throws: SecurityException - If a security manager exists and its SecurityManager. String method denies delete access to the file deleteOnExit public void deleteOnExit Requests that the file or directory denoted by this abstract pathname be deleted when the virtual machine terminates. Files or directories are deleted in the reverse order that they are registered.
Invoking this method to delete a file or directory that is already registered for deletion has no effect. Deletion will be attempted only for normal termination of the virtual machine, as defined by the Java Language Specification. Once deletion has been requested, it is not possible to cancel the request.
This method should therefore be used with care. String method denies delete access to the file Since: 1. If this abstract pathname does not denote a directory, then this method returns null. Otherwise an array of strings is returned, one for each file or directory in the directory. Names denoting the directory itself and the directory's parent directory are not included in the result.
Each string is a file name rather than a complete path. There is no guarantee that the name strings in the resulting array will appear in any specific order; they are not, in particular, guaranteed to appear in alphabetical order.
Note that the Files class defines the newDirectoryStream method to open a directory and iterate over the names of the files in the directory. This may use less resources when working with very large directories, and may be more responsive when working with remote directories. Returns: An array of strings naming the files and directories in the directory denoted by this abstract pathname.
The array will be empty if the directory is empty. The behavior of this method is the same as that of the list method, except that the strings in the returned array must satisfy the filter. If the given filter is null then all names are accepted. Otherwise, a name satisfies the filter if and only if the value true results when the FilenameFilter. Parameters: filter - A filename filter Returns: An array of strings naming the files and directories in the directory denoted by this abstract pathname that were accepted by the given filter.
The array will be empty if the directory is empty or if no names were accepted by the filter. Otherwise an array of File objects is returned, one for each file or directory in the directory. Pathnames denoting the directory itself and the directory's parent directory are not included in the result.
Each resulting abstract pathname is constructed from this abstract pathname using the File File, String constructor. Therefore if this pathname is absolute then each resulting pathname is absolute; if this pathname is relative then each resulting pathname will be relative to the same directory.
This may use less resources when working with very large directories. Returns: An array of abstract pathnames denoting the files and directories in the directory denoted by this abstract pathname. The behavior of this method is the same as that of the listFiles method, except that the pathnames in the returned array must satisfy the filter.
If the given filter is null then all pathnames are accepted. Otherwise, a pathname satisfies the filter if and only if the value true results when the FilenameFilter. Parameters: filter - A filename filter Returns: An array of abstract pathnames denoting the files and directories in the directory denoted by this abstract pathname.
Otherwise, a pathname satisfies the filter if and only if the value true results when the FileFilter. Parameters: filter - A file filter Returns: An array of abstract pathnames denoting the files and directories in the directory denoted by this abstract pathname. Filter mkdir public boolean mkdir Creates the directory named by this abstract pathname. Returns: true if and only if the directory was created; false otherwise Throws: SecurityException - If a security manager exists and its SecurityManager.
String method does not permit the named directory to be created mkdirs public boolean mkdirs Creates the directory named by this abstract pathname, including any necessary but nonexistent parent directories.
Note that if this operation fails it may have succeeded in creating some of the necessary parent directories. Returns: true if and only if the directory was created, along with all necessary parent directories; false otherwise Throws: SecurityException - If a security manager exists and its SecurityManager.
String method does not permit verification of the existence of the named directory and all necessary parent directories; or if the SecurityManager. String method does not permit the named directory and all necessary parent directories to be created renameTo public boolean renameTo File dest Renames the file denoted by this abstract pathname.
Many aspects of the behavior of this method are inherently platform-dependent: The rename operation might not be able to move a file from one filesystem to another, it might not be atomic, and it might not succeed if a file with the destination abstract pathname already exists. The return value should always be checked to make sure that the rename operation was successful.
Note that the Files class defines the move method to move or rename a file in a platform independent manner. Parameters: dest - The new abstract pathname for the named file Returns: true if and only if the renaming succeeded; false otherwise Throws: SecurityException - If a security manager exists and its SecurityManager. String method denies write access to either the old or new pathnames NullPointerException - If parameter dest is null setLastModified public boolean setLastModified long time Sets the last-modified time of the file or directory named by this abstract pathname.
All platforms support file-modification times to the nearest second, but some provide more precision. The argument will be truncated to fit the supported precision. If the operation succeeds and no intervening operations on the file take place, then the next invocation of the lastModified method will return the possibly truncated time argument that was passed to this method. Parameters: time - The new last-modified time, measured in milliseconds since the epoch GMT, January 1, Returns: true if and only if the operation succeeded; false otherwise Throws: IllegalArgumentException - If the argument is negative SecurityException - If a security manager exists and its SecurityManager.
String method denies write access to the named file Since: 1. After invoking this method the file or directory is guaranteed not to change until it is either deleted or marked to allow write access. Whether or not a read-only file or directory may be deleted depends upon the underlying system.
Returns: true if and only if the operation succeeded; false otherwise Throws: SecurityException - If a security manager exists and its SecurityManager. The Files class defines methods that operate on file attributes including file permissions.
This may be used when finer manipulation of file permissions is required. Parameters: writable - If true , sets the access permission to allow write operations; if false to disallow write operations ownerOnly - If true , the write permission applies only to the owner's write permission; otherwise, it applies to everybody. If the underlying file system can not distinguish the owner's write permission from that of others, then the permission will apply to everybody, regardless of this value.
Returns: true if and only if the operation succeeded. The operation will fail if the user does not have permission to change the access permissions of this abstract pathname. An invocation of this method of the form file. Parameters: readable - If true , sets the access permission to allow read operations; if false to disallow read operations ownerOnly - If true , the read permission applies only to the owner's read permission; otherwise, it applies to everybody.
If the underlying file system can not distinguish the owner's read permission from that of others, then the permission will apply to everybody, regardless of this value. If readable is false and the underlying file system does not implement a read permission, then the operation will fail.
Parameters: executable - If true , sets the access permission to allow execute operations; if false to disallow execute operations ownerOnly - If true , the execute permission applies only to the owner's execute permission; otherwise, it applies to everybody. If the underlying file system can not distinguish the owner's execute permission from that of others, then the permission will apply to everybody, regardless of this value.
If executable is false and the underlying file system does not implement an execute permission, then the operation will fail. If executable is false and the underlying file system does not implement an excute permission, then the operation will fail.
Returns: true if and only if the abstract pathname exists and the application is allowed to execute the file Throws: SecurityException - If a security manager exists and its SecurityManager. String method denies execute access to the file Since: 1. A particular Java platform may support zero or more hierarchically-organized file systems. Each file system has a root directory from which all other files in that file system can be reached.
The set of available filesystem roots is affected by various system-level operations such as the insertion or ejection of removable media and the disconnecting or unmounting of physical or virtual disk drives. This method returns an array of File objects that denote the root directories of the available filesystem roots. It is guaranteed that the canonical pathname of any file physically present on the local machine will begin with one of the roots returned by this method.
The canonical pathname of a file that resides on some other machine and is accessed via a remote-filesystem protocol such as SMB or NFS may or may not begin with one of the roots returned by this method.
If the pathname of a remote file is syntactically indistinguishable from the pathname of a local file then it will begin with one of the roots returned by this method. Thus, for example, File objects denoting the root directories of the mapped network drives of a Windows platform will be returned by this method, while File objects containing UNC pathnames will not be returned by this method. Unlike most methods in this class, this method does not throw security exceptions. If a security manager exists and its SecurityManager.
Returns: An array of File objects denoting the available filesystem roots, or null if the set of roots could not be determined. The array will be empty if there are no filesystem roots. Returns: The size, in bytes, of the partition or 0L if this abstract pathname does not name a partition Throws: SecurityException - If a security manager has been installed and it denies RuntimePermission "getFileSystemAttributes" or its SecurityManager.
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 call.
This method makes no guarantee that write operations to this file system will succeed. Returns: The number of unallocated bytes on the partition or 0L if the abstract pathname does not name a partition.
This value will be less than or equal to the total file system size returned by getTotalSpace. When possible, this method checks for write permissions and other operating system restrictions and will therefore usually provide a more accurate estimate of how much new data can actually be written than getFreeSpace. 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. Returns: The number of available bytes on the partition or 0L if the abstract pathname does not name a partition.
On systems where this information is not available, this method will be equivalent to a call to getFreeSpace. If this method returns successfully then it is guaranteed that: The file denoted by the returned abstract pathname did not exist before this method was invoked, and Neither this method nor any of its variants will return the same abstract pathname again in the current invocation of the virtual machine. This method provides only part of a temporary-file facility.
To arrange for a file created by this method to be deleted automatically, use the deleteOnExit method. The prefix argument must be at least three characters long. It is recommended that the prefix be a short, meaningful string such as "hjb" or "mail". The suffix argument may be null , in which case the suffix ". To create the new file, the prefix and the suffix may first be adjusted to fit the limitations of the underlying platform.
If the prefix is too long then it will be truncated, but its first three characters will always be preserved. If the suffix is too long then it too will be truncated, but if it begins with a period character '.
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