ObjectOutput


1   /*
2    * @(#)ObjectOutput.java    1.16 03/12/19
3    *
4    * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
5    * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
6    */
7   
8   package java.io;
9   
10  /**
11   * ObjectOutput extends the DataOutput interface to include writing of objects.
12   * DataOutput includes methods for output of primitive types, ObjectOutput
13   * extends that interface to include objects, arrays, and Strings.
14   *
15   * @author  unascribed
16   * @version 1.16, 12/19/03
17   * @see java.io.InputStream
18   * @see java.io.ObjectOutputStream
19   * @see java.io.ObjectInputStream
20   * @since   JDK1.1
21   */
22  public interface ObjectOutput extends DataOutput   {
23      /**
24       * Write an object to the underlying storage or stream.  The
25       * class that implements this interface defines how the object is
26       * written.
27       *
28       * @param obj the object to be written
29       * @exception IOException Any of the usual Input/Output related exceptions.
30       */
31      public void writeObject(Object   obj)
32        throws IOException  ;
33  
34      /**
35       * Writes a byte. This method will block until the byte is actually
36       * written.
37       * @param b the byte
38       * @exception IOException If an I/O error has occurred.
39       */
40      public void write(int b) throws IOException  ;
41  
42      /**
43       * Writes an array of bytes. This method will block until the bytes
44       * are actually written.
45       * @param b the data to be written
46       * @exception IOException If an I/O error has occurred.
47       */
48      public void write(byte b[]) throws IOException  ;
49  
50      /**
51       * Writes a sub array of bytes.
52       * @param b the data to be written
53       * @param off   the start offset in the data
54       * @param len   the number of bytes that are written
55       * @exception IOException If an I/O error has occurred.
56       */
57      public void write(byte b[], int off, int len) throws IOException  ;
58  
59      /**
60       * Flushes the stream. This will write any buffered
61       * output bytes.
62       * @exception IOException If an I/O error has occurred.
63       */
64      public void flush() throws IOException  ;
65  
66      /**
67       * Closes the stream. This method must be called
68       * to release any resources associated with the
69       * stream.
70       * @exception IOException If an I/O error has occurred.
71       */
72      public void close() throws IOException  ;
73  }
74
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