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Java Source Code / Java Documentation » 6.0 JDK Modules » j2me » java.io 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   java.io.Writer
      java.io.OutputStreamWriter
         java.io.FileWriter

FileWriter
public class FileWriter extends OutputStreamWriter (Code)
Convenience class for writing character files. The constructors of this class assume that the default character encoding and the default byte-buffer size are acceptable. To specify these values yourself, construct an OutputStreamWriter on a FileOutputStream.

Whether or not a file is available or may be created depends upon the underlying platform. Some platforms, in particular, allow a file to be opened for writing by only one FileWriter (or other file-writing object) at a time. In such situations the constructors in this class will fail if the file involved is already open.

FileWriter is meant for writing streams of characters. For writing streams of raw bytes, consider using a FileOutputStream.
See Also:   OutputStreamWriter
See Also:   FileOutputStream
version:
   1.11, 00/02/02
author:
   Mark Reinhold
since:
   JDK1.1




Constructor Summary
public  FileWriter(String fileName)
     Constructs a FileWriter object given a file name.
public  FileWriter(String fileName, boolean append)
     Constructs a FileWriter object given a file name with a boolean indicating whether or not to append the data written.
public  FileWriter(File file)
     Constructs a FileWriter object given a File object.
public  FileWriter(File file, boolean append)
     Constructs a FileWriter object given a File object.
public  FileWriter(FileDescriptor fd)
     Constructs a FileWriter object associated with a file descriptor.



Constructor Detail
FileWriter
public FileWriter(String fileName) throws IOException(Code)
Constructs a FileWriter object given a file name.
Parameters:
  fileName - String The system-dependent filename.
throws:
  IOException - if the named file exists but is a directory ratherthan a regular file, does not exist but cannot becreated, or cannot be opened for any other reason



FileWriter
public FileWriter(String fileName, boolean append) throws IOException(Code)
Constructs a FileWriter object given a file name with a boolean indicating whether or not to append the data written.
Parameters:
  fileName - String The system-dependent filename.
Parameters:
  append - boolean if true, then data will be writtento the end of the file rather than the beginning.
throws:
  IOException - if the named file exists but is a directory ratherthan a regular file, does not exist but cannot becreated, or cannot be opened for any other reason



FileWriter
public FileWriter(File file) throws IOException(Code)
Constructs a FileWriter object given a File object.
Parameters:
  file - a File object to write to.
throws:
  IOException - if the file exists but is a directory rather thana regular file, does not exist but cannot be created,or cannot be opened for any other reason



FileWriter
public FileWriter(File file, boolean append) throws IOException(Code)
Constructs a FileWriter object given a File object. If the second argument is true, then bytes will be written to the end of the file rather than the beginning.
Parameters:
  file - a File object to write to
Parameters:
  append - if true, then bytes will be writtento the end of the file rather than the beginning
throws:
  IOException - if the file exists but is a directory rather thana regular file, does not exist but cannot be created,or cannot be opened for any other reason
since:
   1.4



FileWriter
public FileWriter(FileDescriptor fd)(Code)
Constructs a FileWriter object associated with a file descriptor.
Parameters:
  fd - FileDescriptor object to write to.




Methods inherited from java.io.OutputStreamWriter
public void close() throws IOException(Code)(Java Doc)
public void flush() throws IOException(Code)(Java Doc)
public void write(int c) throws IOException(Code)(Java Doc)
public void write(char cbuf, int off, int len) throws IOException(Code)(Java Doc)
public void write(String str, int off, int len) throws IOException(Code)(Java Doc)

Fields inherited from java.io.Writer
protected Object lock(Code)(Java Doc)

Methods inherited from java.io.Writer
abstract public void close() throws IOException(Code)(Java Doc)
abstract public void flush() throws IOException(Code)(Java Doc)
public void write(int c) throws IOException(Code)(Java Doc)
public void write(char cbuf) throws IOException(Code)(Java Doc)
abstract public void write(char cbuf, int off, int len) throws IOException(Code)(Java Doc)
public void write(String str) throws IOException(Code)(Java Doc)
public void write(String str, int off, int len) throws IOException(Code)(Java Doc)

Methods inherited from java.lang.Object
public boolean equals(Object obj)(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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