Example usage for Java java.io File fields, constructors, methods, implement or subclass
The text is from its open source code.
| String | path This abstract pathname's normalized pathname string. |
| char | separatorChar The system-dependent default name-separator character. |
| String | separator The system-dependent default name-separator character, represented as a string for convenience. |
| char | pathSeparatorChar The system-dependent path-separator character. |
| String | pathSeparator The system-dependent path-separator character, represented as a string for convenience. |
| File(String pathname) Creates a new File instance by converting the given pathname string into an abstract pathname. | |
| File(URI uri) Creates a new File instance by converting the given file: URI into an abstract pathname. | |
| File(String pathname, int prefixLength) Internal constructor for already-normalized pathname strings. | |
| File(String child, File parent) Internal constructor for already-normalized pathname strings. | |
| File(String parent, String child) Creates a new File instance from a parent pathname string and a child pathname string. | |
| File(File parent, String child) Creates a new File instance from a parent abstract pathname and a child pathname string. |
| boolean | canExecute() Tests whether the application can execute the file denoted by this abstract pathname. |
| boolean | canRead() Tests whether the application can read the file denoted by this abstract pathname. |
| boolean | canWrite() Tests whether the application can modify the file denoted by this abstract pathname. |
| Object | clone() Creates and returns a copy of this object. |
| int | compareTo(File pathname) Compares two abstract pathnames lexicographically. |
| boolean | createNewFile() Atomically creates a new, empty file named by this abstract pathname if and only if a file with this name does not yet exist. |
| File | createTempFile(String prefix, String suffix) Creates an empty file in the default temporary-file directory, using the given prefix and suffix to generate its name. |
| File | createTempFile(String prefix, String suffix, File directory) Creates a new empty file in the specified directory, using the given prefix and suffix strings to generate its name. |
| boolean | delete() Deletes the file or directory denoted by this abstract pathname. |
| void | deleteOnExit() Requests that the file or directory denoted by this abstract pathname be deleted when the virtual machine terminates. |
| boolean | equals(Object obj) Tests this abstract pathname for equality with the given object. |
| boolean | exists() Tests whether the file or directory denoted by this abstract pathname exists. |
| File | getAbsoluteFile() Returns the absolute form of this abstract pathname. |
| String | getAbsolutePath() Returns the absolute pathname string of this abstract pathname. |
| File | getCanonicalFile() Returns the canonical form of this abstract pathname. |
| String | getCanonicalPath() Returns the canonical pathname string of this abstract pathname. |
| Class | getClass() Returns the runtime class of this Object . |
| long | getFreeSpace() Returns the number of unallocated bytes in the partition named by this abstract path name. |
| String | getName() Returns the name of the file or directory denoted by this abstract pathname. |
| String | getParent() Returns the pathname string of this abstract pathname's parent, or null if this pathname does not name a parent directory. |
| File | getParentFile() Returns the abstract pathname of this abstract pathname's parent, or null if this pathname does not name a parent directory. |
| String | getPath() Converts this abstract pathname into a pathname string. |
| long | getTotalSpace() Returns the size of the partition named by this abstract pathname. |
| long | getUsableSpace() Returns the number of bytes available to this virtual machine on the partition named by this abstract pathname. |
| int | hashCode() Computes a hash code for this abstract pathname. |
| boolean | isAbsolute() Tests whether this abstract pathname is absolute. |
| boolean | isDirectory() Tests whether the file denoted by this abstract pathname is a directory. |
| boolean | isFile() Tests whether the file denoted by this abstract pathname is a normal file. |
| boolean | isHidden() Tests whether the file named by this abstract pathname is a hidden file. |
| long | lastModified() Returns the time that the file denoted by this abstract pathname was last modified. |
| long | length() Returns the length of the file denoted by this abstract pathname. |
| String[] | list() Returns an array of strings naming the files and directories in the directory denoted by this abstract pathname. |
| String[] | list(FilenameFilter filter) Returns an array of strings naming the files and directories in the directory denoted by this abstract pathname that satisfy the specified filter. |
| File[] | listFiles(FilenameFilter filter) Returns an array of abstract pathnames denoting the files and directories in the directory denoted by this abstract pathname that satisfy the specified filter. |
| File[] | listFiles(FileFilter filter) Returns an array of abstract pathnames denoting the files and directories in the directory denoted by this abstract pathname that satisfy the specified filter. |
| File[] | listFiles() Returns an array of abstract pathnames denoting the files in the directory denoted by this abstract pathname. |
| File[] | listRoots() List the available filesystem roots. |
| boolean | mkdir() Creates the directory named by this abstract pathname. |
| boolean | mkdirs() Creates the directory named by this abstract pathname, including any necessary but nonexistent parent directories. |
| boolean | renameTo(File dest) Renames the file denoted by this abstract pathname. |
| boolean | setExecutable(boolean executable) A convenience method to set the owner's execute permission for this abstract pathname. |
| boolean | setExecutable(boolean executable, boolean ownerOnly) Sets the owner's or everybody's execute permission for this abstract pathname. |
| boolean | setLastModified(long time) Sets the last-modified time of the file or directory named by this abstract pathname. |
| boolean | setReadable(boolean readable) A convenience method to set the owner's read permission for this abstract pathname. |
| boolean | setReadable(boolean readable, boolean ownerOnly) Sets the owner's or everybody's read permission for this abstract pathname. |
| boolean | setReadOnly() Marks the file or directory named by this abstract pathname so that only read operations are allowed. |
| boolean | setWritable(boolean writable) A convenience method to set the owner's write permission for this abstract pathname. |
| boolean | setWritable(boolean writable, boolean ownerOnly) Sets the owner's or everybody's write permission for this abstract pathname. |
| Path | toPath() Returns a Path java.nio.file.Path object constructed from this abstract path. |
| String | toString() Returns the pathname string of this abstract pathname. |
| URI | toURI() Constructs a file: URI that represents this abstract pathname. |
| URL | toURL() Converts this abstract pathname into a file: URL. |
| void | wait() Causes the current thread to wait until it is awakened, typically by being notified or interrupted. |