01: /*
02: * @(#)ObjectOutput.java 1.20 06/10/10
03: *
04: * Copyright 1990-2006 Sun Microsystems, Inc. All Rights Reserved.
05: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
06: *
07: * This program is free software; you can redistribute it and/or
08: * modify it under the terms of the GNU General Public License version
09: * 2 only, as published by the Free Software Foundation.
10: *
11: * This program is distributed in the hope that it will be useful, but
12: * WITHOUT ANY WARRANTY; without even the implied warranty of
13: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14: * General Public License version 2 for more details (a copy is
15: * included at /legal/license.txt).
16: *
17: * You should have received a copy of the GNU General Public License
18: * version 2 along with this work; if not, write to the Free Software
19: * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20: * 02110-1301 USA
21: *
22: * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
23: * Clara, CA 95054 or visit www.sun.com if you need additional
24: * information or have any questions.
25: *
26: */
27:
28: package java.io;
29:
30: /**
31: * ObjectOutput extends the DataOutput interface to include writing of objects.
32: * DataOutput includes methods for output of primitive types, ObjectOutput
33: * extends that interface to include objects, arrays, and Strings.
34: *
35: * @author unascribed
36: * @version 1.13, 02/02/00
37: * @see java.io.InputStream
38: * @see java.io.ObjectOutputStream
39: * @see java.io.ObjectInputStream
40: * @since JDK1.1
41: */
42: public interface ObjectOutput extends DataOutput {
43: /**
44: * Write an object to the underlying storage or stream. The
45: * class that implements this interface defines how the object is
46: * written.
47: *
48: * @param obj the object to be written
49: * @exception IOException Any of the usual Input/Output related exceptions.
50: */
51: public void writeObject(Object obj) throws IOException;
52:
53: /**
54: * Writes a byte. This method will block until the byte is actually
55: * written.
56: * @param b the byte
57: * @exception IOException If an I/O error has occurred.
58: */
59: public void write(int b) throws IOException;
60:
61: /**
62: * Writes an array of bytes. This method will block until the bytes
63: * are actually written.
64: * @param b the data to be written
65: * @exception IOException If an I/O error has occurred.
66: */
67: public void write(byte b[]) throws IOException;
68:
69: /**
70: * Writes a sub array of bytes.
71: * @param b the data to be written
72: * @param off the start offset in the data
73: * @param len the number of bytes that are written
74: * @exception IOException If an I/O error has occurred.
75: */
76: public void write(byte b[], int off, int len) throws IOException;
77:
78: /**
79: * Flushes the stream. This will write any buffered
80: * output bytes.
81: * @exception IOException If an I/O error has occurred.
82: */
83: public void flush() throws IOException;
84:
85: /**
86: * Closes the stream. This method must be called
87: * to release any resources associated with the
88: * stream.
89: * @exception IOException If an I/O error has occurred.
90: */
91: public void close() throws IOException;
92: }
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