Showing posts with label serialization. Show all posts
Showing posts with label serialization. Show all posts

Serializing and De-serializing a Java object to XML

Posted by zone817
0

A Java object can be serialized as XML using the XMLEncoder

try 
{
    XMLEncoder enc= new XMLEncoder(new BufferedOutputStream(
        new FileOutputStream("<output xml file>")));
    enc.writeObject(instance);//instance is the bean object to be serialized
    enc.close();
} 
catch (FileNotFoundException e) 
{
}


De-serializing the XML file can be done as follows using the XMLDecoder


try
 {
    XMLDecoder dec= new XMLDecoder(new BufferedInputStream(
        new FileInputStream("<input xml file>")));
    MyClass o = (MyClass)dec.readObject();
    dec.close();
 } 
catch (FileNotFoundException e)
 {
 }

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Using readResolve method to create a Serializable Singleton

Posted by zone817
0

The readResolve method allows a class to replace/resolve the object read from the stream before it is returned to the caller. The following code demonstrates how to create a serializable singleton , using the method.



public class Singleton implements Serializable
{
 static Singleton instance= new Singleton ();

private Singleton ()
 {
 }

protected Object readResolve() 
 {
  return instance;
 }

}

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