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Chapter 24 The java.io Package |
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Chapter 24 The java.io Package |
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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;
}
Object->OutputStream->ObjectOutputStream(ObjectOutput(DataOutput))
AWTEventMulticaster.save(), AWTEventMulticaster.saveInternal()
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| java.io.ObjectOutput (JDK 1.1) |  |
java.io.ObjectStreamClass (JDK 1.1) |
