FileDocCategorySizeDatePackage
Serializer.javaAPI DocExample4596Sat Jan 24 10:44:30 GMT 2004je3.serialization

Serializer

public class Serializer extends Object
This class defines utility routines that use Java serialization.

Fields Summary
Constructors Summary
Methods Summary
static java.lang.Objectdeepclone(java.io.Serializable o)
Use object serialization to make a "deep clone" of the object o. This method serializes o and all objects it refers to, and then deserializes that graph of objects, which means that everything is copied. This differs from the clone() method of an object which is usually implemented to produce a "shallow" clone that copies references to other objects, instead of copying all referenced objects.

	// Create a connected pair of "piped" streams.  
	// We'll write bytes to one, and them from the other one.
	final PipedOutputStream pipeout = new PipedOutputStream();
	PipedInputStream pipein = new PipedInputStream(pipeout);
	
	// Now define an independent thread to serialize the object and write
	// its bytes to the PipedOutputStream
	Thread writer = new Thread() {
		public void run() {
		    ObjectOutputStream out = null;
		    try {
			out = new ObjectOutputStream(pipeout);
			out.writeObject(o);
		    }
		    catch(IOException e) {}
		    finally {
			try { out.close(); } catch (Exception e) {}
		    }
		}
	    };
	writer.start();  // Make the thread start serializing and writing

	// Meanwhile, in this thread, read and deserialize from the piped
	// input stream.  The resulting object is a deep clone of the original.
	ObjectInputStream in = new ObjectInputStream(pipein);
	return in.readObject();
static java.lang.Objectload(java.io.File f)
Deserialize the contents of File f and return the resulting object

	ObjectInputStream in =     // The class for de-serialization
	    new ObjectInputStream(new FileInputStream(f));
	return in.readObject();    // This method deserializes an object graph
static voidstore(java.io.Serializable o, java.io.File f)
Serialize the object o (and any Serializable objects it refers to) and store its serialized state in File f.

	ObjectOutputStream out =   // The class for serialization
	    new ObjectOutputStream(new FileOutputStream(f));
	out.writeObject(o);        // This method serializes an object graph
	out.close();