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My first initial commit with all of mine experimental changes.

Dmitry Kabak (userdima committed 13 years ago

Commit d37b88d1 parent 3f5b46618352 files · +2598093 −-8690Browse files

Showing the changes to java/pkg/java/io/OutputStream.java (1 of 18352 files). Show all

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java/pkg/java/io/OutputStream.java+154−0
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1+/*
2+ * Copyright (c) 1994, 2004, Oracle and/or its affiliates. All rights reserved.
3+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4+ *
5+ * This code is free software; you can redistribute it and/or modify it
6+ * under the terms of the GNU General Public License version 2 only, as
7+ * published by the Free Software Foundation. Oracle designates this
8+ * particular file as subject to the "Classpath" exception as provided
9+ * by Oracle in the LICENSE file that accompanied this code.
10+ *
11+ * This code is distributed in the hope that it will be useful, but WITHOUT
12+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14+ * version 2 for more details (a copy is included in the LICENSE file that
15+ * accompanied this code).
16+ *
17+ * You should have received a copy of the GNU General Public License version
18+ * 2 along with this work; if not, write to the Free Software Foundation,
19+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20+ *
21+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22+ * or visit www.oracle.com if you need additional information or have any
23+ * questions.
24+ */
25+
26+package java.io;
27+
28+/**
29+ * This abstract class is the superclass of all classes representing
30+ * an output stream of bytes. An output stream accepts output bytes
31+ * and sends them to some sink.
32+ * <p>
33+ * Applications that need to define a subclass of
34+ * <code>OutputStream</code> must always provide at least a method
35+ * that writes one byte of output.
36+ *
37+ * @author Arthur van Hoff
38+ * @see java.io.BufferedOutputStream
39+ * @see java.io.ByteArrayOutputStream
40+ * @see java.io.DataOutputStream
41+ * @see java.io.FilterOutputStream
42+ * @see java.io.InputStream
43+ * @see java.io.OutputStream#write(int)
44+ * @since JDK1.0
45+ */
46+public abstract class OutputStream implements Closeable, Flushable {
47+ /**
48+ * Writes the specified byte to this output stream. The general
49+ * contract for <code>write</code> is that one byte is written
50+ * to the output stream. The byte to be written is the eight
51+ * low-order bits of the argument <code>b</code>. The 24
52+ * high-order bits of <code>b</code> are ignored.
53+ * <p>
54+ * Subclasses of <code>OutputStream</code> must provide an
55+ * implementation for this method.
56+ *
57+ * @param b the <code>byte</code>.
58+ * @exception IOException if an I/O error occurs. In particular,
59+ * an <code>IOException</code> may be thrown if the
60+ * output stream has been closed.
61+ */
62+ public abstract void write(int b) throws IOException;
63+
64+ /**
65+ * Writes <code>b.length</code> bytes from the specified byte array
66+ * to this output stream. The general contract for <code>write(b)</code>
67+ * is that it should have exactly the same effect as the call
68+ * <code>write(b, 0, b.length)</code>.
69+ *
70+ * @param b the data.
71+ * @exception IOException if an I/O error occurs.
72+ * @see java.io.OutputStream#write(byte[], int, int)
73+ */
74+ public void write(byte b[]) throws IOException {
75+ write(b, 0, b.length);
76+ }
77+
78+ /**
79+ * Writes <code>len</code> bytes from the specified byte array
80+ * starting at offset <code>off</code> to this output stream.
81+ * The general contract for <code>write(b, off, len)</code> is that
82+ * some of the bytes in the array <code>b</code> are written to the
83+ * output stream in order; element <code>b[off]</code> is the first
84+ * byte written and <code>b[off+len-1]</code> is the last byte written
85+ * by this operation.
86+ * <p>
87+ * The <code>write</code> method of <code>OutputStream</code> calls
88+ * the write method of one argument on each of the bytes to be
89+ * written out. Subclasses are encouraged to override this method and
90+ * provide a more efficient implementation.
91+ * <p>
92+ * If <code>b</code> is <code>null</code>, a
93+ * <code>NullPointerException</code> is thrown.
94+ * <p>
95+ * If <code>off</code> is negative, or <code>len</code> is negative, or
96+ * <code>off+len</code> is greater than the length of the array
97+ * <code>b</code>, then an <tt>IndexOutOfBoundsException</tt> is thrown.
98+ *
99+ * @param b the data.
100+ * @param off the start offset in the data.
101+ * @param len the number of bytes to write.
102+ * @exception IOException if an I/O error occurs. In particular,
103+ * an <code>IOException</code> is thrown if the output
104+ * stream is closed.
105+ */
106+ public void write(byte b[], int off, int len) throws IOException {
107+ if (b == null) {
108+ throw new NullPointerException();
109+ } else if ((off < 0) || (off > b.length) || (len < 0) ||
110+ ((off + len) > b.length) || ((off + len) < 0)) {
111+ throw new IndexOutOfBoundsException();
112+ } else if (len == 0) {
113+ return;
114+ }
115+ for (int i = 0 ; i < len ; i++) {
116+ write(b[off + i]);
117+ }
118+ }
119+
120+ /**
121+ * Flushes this output stream and forces any buffered output bytes
122+ * to be written out. The general contract of <code>flush</code> is
123+ * that calling it is an indication that, if any bytes previously
124+ * written have been buffered by the implementation of the output
125+ * stream, such bytes should immediately be written to their
126+ * intended destination.
127+ * <p>
128+ * If the intended destination of this stream is an abstraction provided by
129+ * the underlying operating system, for example a file, then flushing the
130+ * stream guarantees only that bytes previously written to the stream are
131+ * passed to the operating system for writing; it does not guarantee that
132+ * they are actually written to a physical device such as a disk drive.
133+ * <p>
134+ * The <code>flush</code> method of <code>OutputStream</code> does nothing.
135+ *
136+ * @exception IOException if an I/O error occurs.
137+ */
138+ public void flush() throws IOException {
139+ }
140+
141+ /**
142+ * Closes this output stream and releases any system resources
143+ * associated with this stream. The general contract of <code>close</code>
144+ * is that it closes the output stream. A closed stream cannot perform
145+ * output operations and cannot be reopened.
146+ * <p>
147+ * The <code>close</code> method of <code>OutputStream</code> does nothing.
148+ *
149+ * @exception IOException if an I/O error occurs.
150+ */
151+ public void close() throws IOException {
152+ }
153+
154+}