Guava: Google Core Libraries for Java 33.1.0-jre · com.google.common.io.Files

Modifier and Type	Class and Description
private static class	Files.FileByteSink
private static class	Files.FileByteSource
private static enum	Files.FilePredicate

Modifier and Type	Field and Description
private static final SuccessorsFunction<File>	FILE_TREE

Access	Constructor and Description
private	Files()

Method Summary

Modifier and Type	Method and Description
public static void	append(CharSequence the character sequence to append from, File the destination file to, Charset the charset used to encode the output stream; see `StandardCharsets` for helpful predefined constants charset) Deprecated Prefer `asCharSink(to, charset, FileWriteMode.APPEND).write(from)`. This method is scheduled to be removed in October 2019. Appends a character sequence (such as a string) to a file using the given character set.
public static ByteSink	asByteSink(File file, FileWriteMode... modes) Returns a new `ByteSink` for writing bytes to the given file.
public static ByteSource	asByteSource(File file) Returns a new `ByteSource` for reading bytes from the given file.
public static CharSink	asCharSink(File file, Charset charset, FileWriteMode... modes) Returns a new `CharSink` for writing character data to the given file using the given character set.
public static CharSource	asCharSource(File file, Charset charset) Returns a new `CharSource` for reading character data from the given file using the given character set.
public static void	copy(File the source file from, OutputStream the output stream to) Copies all bytes from a file to an output stream.
public static void	copy(File the source file from, File the destination file to) Copies all the bytes from one file to another.
public static void	copy(File the source file from, Charset the charset used to decode the input stream; see `StandardCharsets` for helpful predefined constants charset, Appendable the appendable object to) Deprecated Prefer `asCharSource(from, charset).copyTo(to)`. Copies all characters from a file to an appendable object, using the given character set.
public static void	createParentDirs(File file) Creates any necessary but nonexistent parent directories of the specified file.
public static File	Returns: the newly-created directory createTempDir() Deprecated For Android users, see the Data and File Storage overview to select an appropriate temporary directory (perhaps `context.getCacheDir()`), and create your own directory under that. Atomically creates a new directory somewhere beneath the system's temporary directory (as defined by the `java.io.tmpdir` system property), and returns its name.
public static boolean	equal(File file1, File file2) Returns true if the given files exist, are not directories, and contain the same bytes.
public static Traverser<File>	fileTraverser() Returns a `Traverser` instance for the file and directory tree.
public static String	getFileExtension(String fullName) Returns the file extension for the given file name, or the empty string if the file has no extension.
public static String	Returns: The file name without its path or extension. getNameWithoutExtension(String The name of the file to trim the extension from. This can be either a fully qualified file name (including a path) or just a file name. file) Returns the file name without its file extension or path.
public static HashCode	Returns: the `HashCode` of all of the bytes in the file hash(File the file to read file, HashFunction the hash function to use to hash the data hashFunction) Deprecated Prefer `asByteSource(file).hash(hashFunction)`. Computes the hash code of the `file` using `hashFunction`.
public static Predicate<File>	isDirectory() Returns a predicate that returns the result of `File#isDirectory` on input files.
public static Predicate<File>	isFile() Returns a predicate that returns the result of `File#isFile` on input files.
public static MappedByteBuffer	Returns: a read-only buffer reflecting `file` map(File the file to map file) Fully maps a file read-only in to memory as per `FileChannel#map(java.nio.channels.FileChannel.MapMode, long, long)`.
public static MappedByteBuffer	Returns: a buffer reflecting `file` map(File the file to map file, FileChannel.MapMode the mode to use when mapping `file` mode) Fully maps a file in to memory as per `FileChannel#map(java.nio.channels.FileChannel.MapMode, long, long)` using the requested `MapMode`.
public static MappedByteBuffer	Returns: a buffer reflecting `file` map(File the file to map file, FileChannel.MapMode the mode to use when mapping `file` mode, long size) Maps a file in to memory as per `FileChannel#map(java.nio.channels.FileChannel.MapMode, long, long)` using the requested `MapMode`.
private static MappedByteBuffer	mapInternal(File file, FileChannel.MapMode mode, long size)
public static void	move(File the source file from, File the destination file to) Moves a file from one path to another.
public static BufferedReader	Returns: the buffered reader newReader(File the file to read from file, Charset the charset used to decode the input stream; see `StandardCharsets` for helpful predefined constants charset) Returns a buffered reader that reads from a file using the given character set.
public static BufferedWriter	Returns: the buffered writer newWriter(File the file to write to file, Charset the charset used to encode the output stream; see `StandardCharsets` for helpful predefined constants charset) Returns a buffered writer that writes to a file using the given character set.
public static <T extends @Nullable Object> T	Returns: the result of the byte processor readBytes(File the file to read file, ByteProcessor<T> the object to which the bytes of the file are passed. processor) Deprecated Prefer `asByteSource(file).read(processor)`. Process the bytes of a file.
public static String	Returns: the first line, or null if the file is empty readFirstLine(File the file to read from file, Charset the charset used to decode the input stream; see `StandardCharsets` for helpful predefined constants charset) Deprecated Prefer `asCharSource(file, charset).readFirstLine()`. Reads the first line from a file.
public static List<String>	Returns: a mutable `List` containing all the lines readLines(File the file to read from file, Charset the charset used to decode the input stream; see `StandardCharsets` for helpful predefined constants charset) Reads all of the lines from a file.
public static <T extends @Nullable Object> T	Returns: the output of processing the lines readLines(File the file to read from file, Charset the charset used to decode the input stream; see `StandardCharsets` for helpful predefined constants charset, LineProcessor<T> the `LineProcessor` to use to handle the lines callback) Deprecated Prefer `asCharSource(file, charset).readLines(callback)`. Streams lines from a `File`, stopping when our callback returns false, or we have read all of the lines.
public static String	simplifyPath(String pathname) Returns the lexically cleaned form of the path name, usually (but not always) equivalent to the original.
public static byte[]	Returns: a byte array containing all the bytes from file toByteArray(File the file to read from file) Reads all bytes from a file into a byte array.
public static String	Returns: a string containing all the characters from the file toString(File the file to read from file, Charset the charset used to decode the input stream; see `StandardCharsets` for helpful predefined constants charset) Deprecated Prefer `asCharSource(file, charset).read()`. Reads all characters from a file into a `String`, using the given character set.
public static void	touch(File the file to create or update file) Creates an empty file or updates the last updated timestamp on the same as the unix command of the same name.
public static void	write(byte[] the bytes to write from, File the destination file to) Overwrites a file with the contents of a byte array.
public static void	write(CharSequence the character sequence to write from, File the destination file to, Charset the charset used to encode the output stream; see `StandardCharsets` for helpful predefined constants charset) Deprecated Prefer `asCharSink(to, charset).write(from)`. Writes a character sequence (such as a string) to a file using the given character set.

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

public final Class Files

Nested and Inner Type Summary

Field Summary

Constructor Summary

Method Summary