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- /*
- * @(#)FileOutputStream.java 1.13 95/05/21 Arthur van Hoff
- *
- * Copyright (c) 1994 Sun Microsystems, Inc. All Rights Reserved.
- *
- * Permission to use, copy, modify, and distribute this software
- * and its documentation for NON-COMMERCIAL purposes and without
- * fee is hereby granted provided that this copyright notice
- * appears in all copies. Please refer to the file "copyright.html"
- * for further important copyright and licensing information.
- *
- * SUN MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF
- * THE SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
- * TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
- * PARTICULAR PURPOSE, OR NON-INFRINGEMENT. SUN SHALL NOT BE LIABLE FOR
- * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
- * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES.
- */
-
- package java.io;
- import java.io.File;
-
- /**
- * File output stream; can be constructed from
- * a file descriptor or a file name.
- * @see FileInputStream
- * @see File
- * @version 1.13, 21 May 1995
- * @author Arthur van Hoff
- */
- public
- class FileOutputStream extends OutputStream {
- /**
- * The system dependent file descriptor.
- */
- private int fd = -1;
-
- /**
- * Creates an output file given a file name.
- * @param name the file name (very system dependent)
- * @exception IOException i/o error occurred, file not found
- */
- public FileOutputStream(String name) {
- this.fd = open(name);
- }
-
- /**
- * Creates an output file given a file descriptor.
- * @param fd the file descriptor (very system dependent)
- * @exception IOException i/o error occurred
- */
- public FileOutputStream(int fd) {
- this.fd = openfd(fd);
- }
-
- /**
- * Creates an output file given a File object.
- * @param file the file to be opened for reading
- * @exception IOException i/o error occurred, file not found
- */
- public FileOutputStream(File file) {
- this(file.getPath());
- }
-
- /**
- * Opens a file for writing
- */
- private native int open(String name);
-
- /**
- * Uses a file descriptor for writing.
- */
- private native int openfd(int fd);
-
- /**
- * Write a byte. Will block until the byte is actually
- * written.
- * @exception IOException i/o error occurred
- */
- public native void write(int b);
-
- /**
- * Writes bytes
- */
- private native void writeBytes(byte b[], int off, int len);
-
- /**
- * Writes an array of bytes. Will block until the bytes
- * are actually written.
- * @param b the data to be written
- * @exception IOException i/o error occurred
- */
- public void write(byte b[]) {
- writeBytes(b, 0, b.length);
- }
-
- /**
- * Writes a sub array of bytes. To be efficient it should
- * be overridden in a subclass.
- * @param b the data to be written
- * @param off the start offset in the data
- * @param len the number of bytes that are written
- * @exception IOException i/o error occurred
- */
- public void write(byte b[], int off, int len) {
- writeBytes(b, off, len);
- }
-
- /**
- * Closes the stream. This method must be called
- * to release any resources associated with the
- * stream.
- * @exception IOException i/o error occurred
- */
- public synchronized native void close();
-
- /**
- * Returns the file descriptor associated with this stream.
- */
- public final int getFD() {
- return fd;
- }
-
- /**
- * Close the stream when garbage is collected.
- */
- protected void finalize() {
- try {
- close();
- } catch (Exception e) {
- }
- }
- }
-