java.io: public class: FileReader

java.io
public class: FileReader [javadoc | source]

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

All Implemented Interfaces:
Closeable, Readable

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.

Also see:

InputStreamReader

FileInputStream

author: Mark - Reinhold

since: JDK1.1 -

Fields inherited from java.io.Reader:
lock

Constructor:

Constructor:
public FileReader(String fileName) throws FileNotFoundException { super(new FileInputStream(fileName)); } Creates a new `FileReader`, given the name of the file to read from. Parameters: `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. 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(File file) throws FileNotFoundException { super(new FileInputStream(file)); } Creates a new `FileReader`, given the `File` to read from. Parameters: `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. 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(FileDescriptor fd) { super(new FileInputStream(fd)); } Creates a new `FileReader`, given the `FileDescriptor` to read from. Parameters: `fd` - the FileDescriptor to read from

 public FileReader(String fileName) throws FileNotFoundException {
        super(new FileInputStream(fileName));
}

FileReader

Parameters:

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.

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(File file) throws FileNotFoundException {
        super(new FileInputStream(file));
}

FileReader

File

Parameters:

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.

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(FileDescriptor fd) {
        super(new FileInputStream(fd));
}

FileReader

FileDescriptor

Parameters:

fd - the FileDescriptor to read from

Methods from java.io.InputStreamReader:
close, getEncoding, read, read, ready

Methods from java.io.Reader:
close, mark, markSupported, read, read, read, read, ready, reset, skip

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