01: /*
02: * Copyright 1996-1999 Sun Microsystems, Inc. All Rights Reserved.
03: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
04: *
05: * This code is free software; you can redistribute it and/or modify it
06: * under the terms of the GNU General Public License version 2 only, as
07: * published by the Free Software Foundation. Sun designates this
08: * particular file as subject to the "Classpath" exception as provided
09: * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
22: * CA 95054 USA or visit www.sun.com if you need additional information or
23: * have any questions.
24: */
25:
26: package java.io;
27:
28: /**
29: * ObjectOutput extends the DataOutput interface to include writing of objects.
30: * DataOutput includes methods for output of primitive types, ObjectOutput
31: * extends that interface to include objects, arrays, and Strings.
32: *
33: * @author unascribed
34: * @version 1.23, 05/05/07
35: * @see java.io.InputStream
36: * @see java.io.ObjectOutputStream
37: * @see java.io.ObjectInputStream
38: * @since JDK1.1
39: */
40: public interface ObjectOutput extends DataOutput {
41: /**
42: * Write an object to the underlying storage or stream. The
43: * class that implements this interface defines how the object is
44: * written.
45: *
46: * @param obj the object to be written
47: * @exception IOException Any of the usual Input/Output related exceptions.
48: */
49: public void writeObject(Object obj) throws IOException;
50:
51: /**
52: * Writes a byte. This method will block until the byte is actually
53: * written.
54: * @param b the byte
55: * @exception IOException If an I/O error has occurred.
56: */
57: public void write(int b) throws IOException;
58:
59: /**
60: * Writes an array of bytes. This method will block until the bytes
61: * are actually written.
62: * @param b the data to be written
63: * @exception IOException If an I/O error has occurred.
64: */
65: public void write(byte b[]) throws IOException;
66:
67: /**
68: * Writes a sub array of bytes.
69: * @param b the data to be written
70: * @param off the start offset in the data
71: * @param len the number of bytes that are written
72: * @exception IOException If an I/O error has occurred.
73: */
74: public void write(byte b[], int off, int len) throws IOException;
75:
76: /**
77: * Flushes the stream. This will write any buffered
78: * output bytes.
79: * @exception IOException If an I/O error has occurred.
80: */
81: public void flush() throws IOException;
82:
83: /**
84: * Closes the stream. This method must be called
85: * to release any resources associated with the
86: * stream.
87: * @exception IOException If an I/O error has occurred.
88: */
89: public void close() throws IOException;
90: }
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