Writing serialized objects to files

[pamela jones]

I am trying to figure out how to write serialized objects to a file and then deserialize the object. I am lost on this subject. Any coding examples I can follow? Thank you.

[Francis Siu]

hi pamela
For output the Object

 
private ObjectOutputStream geoStream;
private FileOutputStream dos;
private File outFile; 
//GeometricObject and Circle should be implements Serializable
GeometricObject geo=new Circle((int)(Math.random()*MAX_LENGTH));
try
{
  outFile=new File("test.txt");
  dos=new FileOutputStream(outFile);
  geoStream=new ObjectOutputStream(dos);
  geoStream.writeObject(geo);
  geoStream.close();
}
catch(IOException ioE)
{
   ioE.printStackTrace();
}

For input object

 
private ObjectInputStream geoStream;
try
{
 File inFile =new File("test.txt");
 FileInputStream fos=new FileInputStream(inFile);
 geoStream =  new ObjectInputStream(fos);
 GeometricObject geo = (GeometricObject) geoStream.readObject();
 System.out.println(geo.toString()+"\n");
 geoStream.close();
}
catch(IOException ioE)
{
 ioE.printStackTrace();
}
 

I hope this can help you a lot

[Kathy Sierra]

Howdy Pamela
I have a PDF file on serialization (10 pages, very easy to read) at:
serialization PDF
cheers,
Kathy