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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.
34 * @see java.io.InputStream
35 * @see java.io.ObjectOutputStream
36 * @see java.io.ObjectInputStream
39 public interface ObjectOutput extends DataOutput, AutoCloseable {
41 * Write an object to the underlying storage or stream. The
42 * class that implements this interface defines how the object is
45 * @param obj the object to be written
46 * @exception IOException Any of the usual Input/Output related exceptions.
48 public void writeObject(Object obj)
52 * Writes a byte. This method will block until the byte is actually
55 * @exception IOException If an I/O error has occurred.
57 public void write(int b) throws IOException;
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.
65 public void write(byte b[]) throws IOException;
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.
74 public void write(byte b[], int off, int len) throws IOException;
77 * Flushes the stream. This will write any buffered
79 * @exception IOException If an I/O error has occurred.
81 public void flush() throws IOException;
84 * Closes the stream. This method must be called
85 * to release any resources associated with the
87 * @exception IOException If an I/O error has occurred.
89 public void close() throws IOException;