Class FileReader
- java.lang.Object
-
- java.io.Reader
-
- java.io.InputStreamReader
-
- java.io.FileReader
- All Implemented Interfaces:
-
Closeable
,AutoCloseable
,Readable
public class FileReader extends InputStreamReader
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
.
- Since:
- 1.1
- See Also:
-
InputStreamReader
,FileInputStream
Field Summary
Fields declared in class java.io.Reader
lock
Constructor Summary
Constructor | Description |
---|---|
FileReader(File file) | Creates a new |
FileReader(FileDescriptor fd) | Creates a new |
FileReader(File file,
Charset charset) | Creates a new |
FileReader(String fileName) | Creates a new |
FileReader(String fileName,
Charset charset) | Creates a new |
Method Summary
Methods declared in class java.io.InputStreamReader
getEncoding, read, read, ready
Methods declared in class java.io.Reader
close, mark, markSupported, nullReader, read, read, reset, skip, transferTo
Methods declared in class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
Constructor Detail
FileReader
public FileReader(String fileName) throws FileNotFoundException
Creates a new FileReader
, given the name of the file to read, using the platform's default charset.
- Parameters:
-
fileName
- 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
public FileReader(File file) throws FileNotFoundException
Creates a new FileReader
, given the File
to read, using the platform's default charset.
- Parameters:
-
file
- theFile
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
public FileReader(FileDescriptor fd)
Creates a new FileReader
, given the FileDescriptor
to read, using the platform's default charset.
- Parameters:
-
fd
- theFileDescriptor
to read
FileReader
public FileReader(String fileName, Charset charset) throws IOException
Creates a new FileReader
, given the name of the file to read and the charset.
- Parameters:
-
fileName
- the name of the file to read -
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. - Since:
- 11
FileReader
public FileReader(File file, Charset charset) throws IOException
Creates a new FileReader
, given the File
to read and the charset.
- Parameters:
-
file
- theFile
to read -
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. - Since:
- 11