ObjectOutput (Java Platform SE 8 ) (original) (raw)

• All Superinterfaces:
  AutoCloseable, DataOutput
  All Known Implementing Classes:
  ObjectOutputStream

public interface ObjectOutput
extends DataOutput, AutoCloseable
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:
JDK1.1
See Also:
InputStream, ObjectOutputStream, ObjectInputStream

• • Method Summary

  All Methods Instance Methods Abstract Methods

  Modifier and Type	Method	Description
  void	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](../../java/io/DataOutput.html "interface in java.io")  
     `[writeBoolean](../../java/io/DataOutput.html#writeBoolean-boolean-), [writeByte](../../java/io/DataOutput.html#writeByte-int-), [writeBytes](../../java/io/DataOutput.html#writeBytes-java.lang.String-), [writeChar](../../java/io/DataOutput.html#writeChar-int-), [writeChars](../../java/io/DataOutput.html#writeChars-java.lang.String-), [writeDouble](../../java/io/DataOutput.html#writeDouble-double-), [writeFloat](../../java/io/DataOutput.html#writeFloat-float-), [writeInt](../../java/io/DataOutput.html#writeInt-int-), [writeLong](../../java/io/DataOutput.html#writeLong-long-), [writeShort](../../java/io/DataOutput.html#writeShort-int-), [writeUTF](../../java/io/DataOutput.html#writeUTF-java.lang.String-)`

• • Method Detail

     * #### writeObject  
     void writeObject([Object](../../java/lang/Object.html "class in java.lang") obj)  
               throws [IOException](../../java/io/IOException.html "class in java.io")  
     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](../../java/io/IOException.html "class in java.io")` \- Any of the usual Input/Output related exceptions.  
     * #### write  
     void write(int b)  
         throws [IOException](../../java/io/IOException.html "class in java.io")  
     Writes a byte. This method will block until the byte is actually written.  
     Specified by:  
     `[write](../../java/io/DataOutput.html#write-int-)` in interface `[DataOutput](../../java/io/DataOutput.html "interface in java.io")`  
     Parameters:  
     `b` \- the byte  
     Throws:  
     `[IOException](../../java/io/IOException.html "class in java.io")` \- If an I/O error has occurred.  
     * #### write  
     void write(byte[] b)  
         throws [IOException](../../java/io/IOException.html "class in java.io")  
     Writes an array of bytes. This method will block until the bytes are actually written.  
     Specified by:  
     `[write](../../java/io/DataOutput.html#write-byte:A-)` in interface `[DataOutput](../../java/io/DataOutput.html "interface in java.io")`  
     Parameters:  
     `b` \- the data to be written  
     Throws:  
     `[IOException](../../java/io/IOException.html "class in java.io")` \- If an I/O error has occurred.  
     * #### write  
     void write(byte[] b,  
                int off,  
                int len)  
         throws [IOException](../../java/io/IOException.html "class in java.io")  
     Writes a sub array of bytes.  
     Specified by:  
     `[write](../../java/io/DataOutput.html#write-byte:A-int-int-)` in interface `[DataOutput](../../java/io/DataOutput.html "interface in java.io")`  
     Parameters:  
     `b` \- the data to be written  
     `off` \- the start offset in the data  
     `len` \- the number of bytes that are written  
     Throws:  
     `[IOException](../../java/io/IOException.html "class in java.io")` \- If an I/O error has occurred.  
     * #### flush  
     void flush()  
         throws [IOException](../../java/io/IOException.html "class in java.io")  
     Flushes the stream. This will write any buffered output bytes.  
     Throws:  
     `[IOException](../../java/io/IOException.html "class in java.io")` \- If an I/O error has occurred.  
     * #### close  
     void close()  
         throws [IOException](../../java/io/IOException.html "class in java.io")  
     Closes the stream. This method must be called to release any resources associated with the stream.  
     Specified by:  
     `[close](../../java/lang/AutoCloseable.html#close--)` in interface `[AutoCloseable](../../java/lang/AutoCloseable.html "interface in java.lang")`  
     Throws:  
     `[IOException](../../java/io/IOException.html "class in java.io")` \- If an I/O error has occurred.

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