FileOutputStream

public class FileOutputStream extends OutputStream

An output stream that writes bytes to a file. If the output file exists, it can be replaced or appended to. If it does not exist, a new file will be created.

   File file = ...
   OutputStream out = null;
   try {
     out = new BufferedOutputStream(new FileOutputStream(file));
     ...
   } finally {
     if (out != null) {
       out.close();
     }
   }
 

This stream is not buffered. Most callers should wrap this stream with a BufferedOutputStream.

Use FileWriter to write characters, as opposed to bytes, to a file.

Public Constructor Summary

FileOutputStream(File file)
Constructs a new FileOutputStream that writes to file.
FileOutputStream(File file, boolean append)
Constructs a new FileOutputStream that writes to file.
FileOutputStream(FileDescriptor fd)
Constructs a new FileOutputStream that writes to fd.
FileOutputStream(String path)
Constructs a new FileOutputStream that writes to path.
FileOutputStream(String path, boolean append)
Constructs a new FileOutputStream that writes to path.

Public Method Summary

void
close()
Closes this output stream and releases any system resources associated with this stream.
FileChannel
getChannel()
Returns a write-only FileChannel that shares its position with this stream.
final FileDescriptor
getFD()
Returns the underlying file descriptor.
void
write(byte[] buffer, int byteOffset, int byteCount)
Writes len bytes from the specified byte array starting at offset off to this output stream.
void
write(int oneByte)
Writes the specified byte to this output stream.

Protected Method Summary

void
finalize()
Invoked when the garbage collector has detected that this instance is no longer reachable.

Inherited Method Summary

Public Constructors

public FileOutputStream (File file)

Constructs a new FileOutputStream that writes to file. The file will be truncated if it exists, and created if it doesn't exist.

Parameters
file
Throws
FileNotFoundException if file cannot be opened for writing.

public FileOutputStream (File file, boolean append)

Constructs a new FileOutputStream that writes to file. If append is true and the file already exists, it will be appended to; otherwise it will be truncated. The file will be created if it does not exist.

Parameters
file
append
Throws
FileNotFoundException if the file cannot be opened for writing.

public