Interface ObjectOutput
- All Superinterfaces:
AutoCloseable
,DataOutput
- All Known Implementing Classes:
ObjectOutputStream
ObjectOutput extends the DataOutput interface to include writing of objects.
DataOutput includes methods for output of primitive types, ObjectOutput
extends that interface to include objects, arrays, and Strings.
- Since:
- 1.1
- See Also:
-
Method Summary
Modifier and TypeMethodDescriptionvoid
close()
Closes the stream.void
flush()
Flushes the stream.void
write
(byte[] b) Writes an array of bytes.void
write
(byte[] b, int off, int len) Writes a sub array of bytes.void
write
(int b) Writes a byte.void
writeObject
(Object obj) Write an object to the underlying storage or stream.Methods inherited from interface java.io.DataOutput
writeBoolean, writeByte, writeBytes, writeChar, writeChars, writeDouble, writeFloat, writeInt, writeLong, writeShort, writeUTF
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Method Details
-
writeObject
Write an object to the underlying storage or stream. The class that implements this interface defines how the object is written.- Parameters:
obj
- the object to be written- Throws:
IOException
- Any of the usual Input/Output related exceptions.
-
write
Writes a byte. This method will block until the byte is actually written.- Specified by:
write
in interfaceDataOutput
- Parameters:
b
- the byte- Throws:
IOException
- If an I/O error has occurred.
-
write
Writes an array of bytes. This method will block until the bytes are actually written.- Specified by:
write
in interfaceDataOutput
- Parameters:
b
- the data to be written- Throws:
IOException
- If an I/O error has occurred.
-
write
Writes a sub array of bytes.- Specified by:
write
in interfaceDataOutput
- Parameters:
b
- the data to be writtenoff
- the start offset in the datalen
- the number of bytes that are written- Throws:
IOException
- If an I/O error has occurred.IndexOutOfBoundsException
- Ifoff
is negative,len
is negative, orlen
is greater thanb.length - off
-
flush
Flushes the stream. This will write any buffered output bytes.- Throws:
IOException
- If an I/O error has occurred.
-
close
Closes the stream. This method must be called to release any resources associated with the stream.- Specified by:
close
in interfaceAutoCloseable
- Throws:
IOException
- If an I/O error has occurred.
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