java.io
Class FileReader

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

All Implemented Interfaces:

Closeable, Readable

public class FileReader
extends InputStreamReader

FileReader is class for turning a file into a character Stream. Data read from the source is converted into characters. The encoding is assumed to 8859_1. The FileReader contains a buffer of bytes read from the source and converts these into characters as needed. The buffer size is 8K.

See Also:

FileWriter

Nested Class Summary

Nested classes/interfaces inherited from class java.io.InputStreamReader

InputStreamReader.HistoricalNamesUtil

Field Summary

Fields inherited from class java.io.InputStreamReader

bytes, decoder

Fields inherited from class java.io.Reader

lock

Constructor Summary

FileReader(File file)
Construct a new FileReader on the given File file.

FileReader(FileDescriptor fd)
Construct a new FileReader on the given FileDescriptor fd.

FileReader(String filename)
Construct a new FileReader on the given file named filename.

Method Summary

Methods inherited from class java.io.InputStreamReader

close, getEncoding, read, read, ready

Methods inherited from class java.io.Reader

mark, markSupported, read, read, reset, skip

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

FileReader

public FileReader(File file)
           throws FileNotFoundException

Construct a new FileReader on the given File file. If the file specified cannot be found, throw a FileNotFoundException.

Parameters:

file - a File to be opened for reading characters from.

Throws:

FileNotFoundException - if the file cannot be opened for reading.

FileReader

public FileReader(FileDescriptor fd)

Construct a new FileReader on the given FileDescriptor fd. Since a previously opened FileDescriptor is passed as an argument, no FileNotFoundException is thrown.

Parameters:

fd - the previously opened file descriptor.

FileReader

public FileReader(String filename)
           throws FileNotFoundException

Construct a new FileReader on the given file named filename. If the filename specified cannot be found, throw a FileNotFoundException.

Parameters:

filename - an absolute or relative path specifying the file to open.

Throws:

FileNotFoundException - if the filename cannot be opened for reading.