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package java.io;


Convenience class for reading character files. The constructors of this class assume that the default character encoding and the default byte-buffer size are appropriate. To specify these values yourself, construct an InputStreamReader on a FileInputStream.

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

Author: Mark Reinhold
See Also:
Since: JDK1.1
/** * Convenience class for reading character files. The constructors of this * class assume that the default character encoding and the default byte-buffer * size are appropriate. To specify these values yourself, construct an * InputStreamReader on a FileInputStream. * * <p><code>FileReader</code> is meant for reading streams of characters. * For reading streams of raw bytes, consider using a * <code>FileInputStream</code>. * * @see InputStreamReader * @see FileInputStream * * @author Mark Reinhold * @since JDK1.1 */
public class FileReader extends InputStreamReader {
Creates a new FileReader, given the name of the file to read from.
Params:
  • fileName – the name of the file to read from
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.
/** * Creates a new <tt>FileReader</tt>, given the name of the * file to read from. * * @param fileName the name of the file to read from * @exception 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. */
public FileReader(String fileName) throws FileNotFoundException { super(new FileInputStream(fileName)); }
Creates a new FileReader, given the File to read from.
Params:
  • file – the File to read from
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.
/** * Creates a new <tt>FileReader</tt>, given the <tt>File</tt> * to read from. * * @param file the <tt>File</tt> to read from * @exception 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. */
public FileReader(File file) throws FileNotFoundException { super(new FileInputStream(file)); }
Creates a new FileReader, given the FileDescriptor to read from.
Params:
  • fd – the FileDescriptor to read from
/** * Creates a new <tt>FileReader</tt>, given the * <tt>FileDescriptor</tt> to read from. * * @param fd the FileDescriptor to read from */
public FileReader(FileDescriptor fd) { super(new FileInputStream(fd)); } }