/**
* Constructs a new FileOutputStream on the File {@code file}. The parameter {@code append}
* determines whether or not the file is opened and appended to or just opened and overwritten.
*
* @param file the file to which this stream writes.
* @param append indicates whether or not to append to an existing file.
* @throws FileNotFoundException if the {@code file} cannot be opened for writing.
* @throws SecurityException if a {@code SecurityManager} is installed and it denies the write
* request.
* @see java.lang.SecurityManager#checkWrite(FileDescriptor)
* @see java.lang.SecurityManager#checkWrite(String)
*/
public FileOutputStream(File file, boolean append) throws FileNotFoundException {
super();
if (file.getPath().isEmpty() || file.isDirectory()) {
throw new FileNotFoundException(file.getAbsolutePath());
}
fd = new FileDescriptor();
fd.readOnly = false;
fd.descriptor = open(file.getAbsolutePath(), append);
}
/**
* Closes this stream. This implementation closes the underlying operating system resources
* allocated to represent this stream.
*
* @throws IOException if an error occurs attempting to close this stream.
*/
@Override
public void close() throws IOException {
if (fd == null) {
// if fd is null, then the underlying file is not opened, so nothing
// to close
return;
}
synchronized (this) {
if (fd.descriptor >= 0) {
close(fd.descriptor);
fd.descriptor = -1;
}
}
}