[Chapter 24] 24.42 java.io.ObjectOutputStream (JDK 1.1)

24.42 java.io.ObjectOutputStream (JDK 1.1)

The ObjectOutputStream is used to serialize objects, arrays, and other values to a stream. The writeObject() method serializes an object or array, and various other methods are used to write primitive data values to the stream. Note that only objects that implement the Serializable interface or the Externalizable interface can be serialized.

The defaultWriteObject() may only be called from the writeObject() method of a Serializable object. It allows an object to perform additional processing before or after serializing itself.

The remaining methods of ObjectOutputStream are miscellaneous stream manipulation methods and protected methods for use by subclasses that want to customize its serialization behavior.

public class ObjectOutputStream extends OutputStream implements ObjectOutput {
    // Public Constructor
            public ObjectOutputStream(OutputStream out) throws IOException;
    // Public Instance Methods
            public void close() throws IOException;  // Overrides OutputStream
            public final void defaultWriteObject() throws IOException;
            public void flush() throws IOException;  // Overrides OutputStream
            public void reset() throws IOException;
            public void write(int data) throws IOException;  // Defines OutputStream
            public void write(byte[] b) throws IOException;  // Overrides OutputStream
            public void write(byte[] b, int off, int len) throws IOException;  // Overrides OutputStream
            public void writeBoolean(boolean data) throws IOException;  // From DataOutput
            public void writeByte(int data) throws IOException;  // From DataOutput
            public void writeBytes(String data) throws IOException;  // From DataOutput
            public void writeChar(int data) throws IOException;  // From DataOutput
            public void writeChars(String data) throws IOException;  // From DataOutput
            public void writeDouble(double data) throws IOException;  // From DataOutput
            public void writeFloat(float data) throws IOException;  // From DataOutput
            public void writeInt(int data) throws IOException;  // From DataOutput
            public void writeLong(long data) throws IOException;  // From DataOutput
            public final void writeObject(Object obj) throws IOException;  // From ObjectOutput
            public void writeShort(int data) throws IOException;  // From DataOutput
            public void writeUTF(String data) throws IOException;  // From DataOutput
    // Protected Instance Methods
            protected void annotateClass(Class cl) throws IOException;
            protected void drain() throws IOException;
            protected final boolean enableReplaceObject(boolean enable) throws SecurityException;
            protected Object replaceObject(Object obj) throws IOException;
            protected void writeStreamHeader() throws IOException;
}

24.42 java.io.ObjectOutputStream (JDK 1.1)

Hierarchy:

Passed To:


java.io.ObjectOutput (JDK 1.1)		java.io.ObjectStreamClass (JDK 1.1)