Summary: Inherited Fields | Ctors | Inherited Methods

FileReader

public class FileReader
extends InputStreamReader

java.lang.Object
↳	java.io.Reader
	↳	java.io.InputStreamReader
		↳	java.io.FileReader

Reads text from character files using a default buffer size. Decoding from bytes to characters uses either a specified charset or the platform's default charset.

The FileReader is meant for reading streams of characters. For reading streams of raw bytes, consider using a FileInputStream.

See also:

Summary

Inherited fields

From class java.io.Reader

protected Object

lock

The object used to synchronize operations on this stream.

Public constructors
`FileReader(File file)` Creates a new `FileReader`, given the `File` to read, using the platform's default charset.
`FileReader(File file, Charset charset)` Creates a new `FileReader`, given the `File` to read and the charset.
`FileReader(FileDescriptor fd)` Creates a new `FileReader`, given the `FileDescriptor` to read, using the platform's default charset.
`FileReader(String fileName)` Creates a new `FileReader`, given the name of the file to read, using the platform's default charset.
`FileReader(String fileName, Charset charset)` Creates a new `FileReader`, given the name of the file to read and the charset.

Inherited methods

From class java.io.InputStreamReader

`void`	`close()` Closes the stream and releases any system resources associated with it.
`String`	`getEncoding()` Returns the name of the character encoding being used by this stream.
`int`	`read()` Reads a single character.
`int`	`read(char[] cbuf, int off, int len)` Reads characters into a portion of an array.
`int`	`read(CharBuffer target)` Attempts to read characters into the specified character buffer.
`boolean`	`ready()` Tells whether this stream is ready to be read.

From class java.io.Reader

`abstract void`	`close()` Closes the stream and releases any system resources associated with it.
`void`	`mark(int readAheadLimit)` Marks the present position in the stream.
`boolean`	`markSupported()` Tells whether this stream supports the mark() operation.
`static Reader`	`nullReader()` Returns a new `Reader` that reads no characters.
`int`	`read()` Reads a single character.
`abstract int`	`read(char[] cbuf, int off, int len)` Reads characters into a portion of an array.
`int`	`read(char[] cbuf)` Reads characters into an array.
`int`	`read(CharBuffer target)` Attempts to read characters into the specified character buffer.
`boolean`	`ready()` Tells whether this stream is ready to be read.
`void`	`reset()` Resets the stream.
`long`	`skip(long n)` Skips characters.
`long`	`transferTo(Writer out)` Reads all characters from this reader and writes the characters to the given writer in the order that they are read.

From class java.lang.Object

`Object`	`clone()` Creates and returns a copy of this object.
`boolean`	`equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void`	`finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>`	`getClass()` Returns the runtime class of this `Object`.
`int`	`hashCode()` Returns a hash code value for the object.
`final void`	`notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String`	`toString()` Returns a string representation of the object.
`final void`	`wait(long timeoutMillis, int nanos)` Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
`final void`	`wait(long timeoutMillis)` Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
`final void`	`wait()` Causes the current thread to wait until it is awakened, typically by being notified or interrupted.

From interface java.io.Closeable

abstract void

close()

Closes this stream and releases any system resources associated with it.

From interface java.lang.Readable

abstract int

read(CharBuffer cb)

Attempts to read characters into the specified character buffer.

From interface java.lang.AutoCloseable

abstract void

close()

Closes this resource, relinquishing any underlying resources.

Public constructors

FileReader

Added in API level 1

 public FileReader (File file)

Creates a new FileReader, given the File to read, using the platform's default charset.

Parameters
`file`	`File`: the `File` to read

Throws
`FileNotFoundException`	if the file does not exist, is a directory rather than a regular file, or for some other reason cannot be opened for reading.

FileReader

Added in API level 33

 public FileReader (File file, Charset charset)

Creates a new FileReader, given the File to read and the charset.

Parameters
`file`	`File`: the `File` to read
`charset`	`Charset`: the charset

Throws
`IOException`	if the file does not exist, is a directory rather than a regular file, or for some other reason cannot be opened for reading.

FileReader

Added in API level 1

 public FileReader (FileDescriptor fd)

Creates a new FileReader, given the FileDescriptor to read, using the platform's default charset.

Parameters
`fd`	`FileDescriptor`: the `FileDescriptor` to read

FileReader

Added in API level 1

 public FileReader (String fileName)

Creates a new FileReader, given the name of the file to read, using the platform's default charset.

Parameters
`fileName`	`String`: the name of the file to read

Throws
`FileNotFoundException`	if the named file does not exist, is a directory rather than a regular file, or for some other reason cannot be opened for reading.

FileReader

Added in API level 33

 public FileReader (String fileName, Charset charset)

Creates a new FileReader, given the name of the file to read and the charset.

Parameters
`fileName`	`String`: the name of the file to read
`charset`	`Charset`: the charset

Throws
`IOException`	if the named file does not exist, is a directory rather than a regular file, or for some other reason cannot be opened for reading.